MULTI-SPACE TRIAL DESIGN PLATFORM
A method, according to some implementations, includes obtaining a criteria for a trial design study, determining permutations for designs in response to the criteria, and determining permutations for scenarios in response to the criteria. The method may further include generating combinations of the permutations for the designs and the permutations for the scenarios, simulating designs corresponding to the generated combinations, and determining performance of the simulated designs.
This application claims the benefit of priority to U.S. Provisional Patent Application Ser. No. 62/968,874 (Attorney Docket No. CTYL-0001-P01), filed Jan. 31, 2020, and entitled “CLINICAL TRIAL DESIGN PLATFORM”.
This application also claims the benefit of priority to U.S. Provisional Patent Application Ser. No. 63/002,197 (Attorney Docket No. CTYL-0001-P02), filed Mar. 30, 2020, and entitled “CLINICAL TRIAL DESIGN PLATFORM”.
This application also claims the benefit of priority to U.S. Provisional Patent Application Ser. No. 63/002,253 (Attorney Docket No. CTYL-0001-P03), filed Mar. 30, 2020, and entitled “CLINICAL TRIAL DESIGN PLATFORM”.
This application also claims the benefit of priority to U.S. Provisional Patent Application Ser. No. 63/037,977 (Attorney Docket No. CTYL-0001-P04), filed Jun. 11, 2020, and entitled “CLINICAL TRIAL DESIGN PLATFORM”.
This application also claims the benefit of priority to U.S. Provisional Patent Application Ser. No. 63/085,700 (Attorney Docket No. CYTL-0001-P05), filed Sep. 30, 2020, and entitled “CLINICAL TRIAL DESIGN PLATFORM”.
This application also claims the benefit of priority to U.S. Provisional Patent Application Ser. No. 63/086,474 (Attorney Docket No. CYTL-0001-P06), filed Oct. 1, 2020, and entitled “CLINICAL TRIAL DESIGN PLATFORM”.
Each of the foregoing applications is incorporated herein by reference in its entirety.
SUMMARYThe success and the performance of a clinical trial depends on the design of the trial. Different choices for the design of a trial may result in very different costs, completion times, and/or other performance parameters for the trial. A trial design platform, systems, and methods are described herein for evaluation and/or comparison of designs for a clinical trial. Evaluation and/or comparison may include a large number of design options. Embodiments of the current disclosure may be used to evaluate hundreds, thousands, or even millions of design options for a clinical trial and may be used to find the optimal or near-optimal design for a trial.
The success of the clinical trial often depends on the ability to recruit a satisfactory number of patients, suitable to participate in the clinical trial. The number of suitable patients available to be recruited for a clinical trial is, in turn, typically a function of the sites selected for the clinical trial. The selection of sites for a clinical trial may include considerations and tradeoffs between hundreds or even thousands of site selections. Embodiments of the current disclosure may provide for a site selection platform, systems, and methods for evaluation and/or comparison of site selection options for a clinical trial.
The success of the clinical trial often depends on the availability of resources needed to conduct the clinical trial. The selection of sites for a clinical trial, with respect to optimizing available resources, may include considerations and tradeoffs between hundreds or even thousands of site selections. Embodiments of the current disclosure may provide for a resource optimization platform, systems, and methods for evaluation and/or comparison of site selection options with respect to optimizing resource availability for a clinical trial. In embodiments, the platform, systems, and methods described herein may be used to evaluate hundreds, thousands, or even millions of site selection options for a clinical trial and may be used to find the optimal or near-optimal resource availability for a trial.
Clinical trials (herein, also referred to as a “trial” or “study”) may be used to assess, examine and evaluate drugs, devices, procedures, treatments, therapies, and the like. Clinical trials may be used to evaluate the efficiency, performance, and/or effectiveness of treatments for subjects. Embodiments of the current disclosure may also optimize for clinical trial resources, which may include drugs/drug supply subject to the trial, devices subject to the trial, administrative personnel, and/or equipment needed to administer a procedure/drug/device subject to the trial.
The success and the performance of a clinical trial depends on the design of the trial. In some cases, a wrong choice in the design of a trial may reduce the usefulness of the trial even if the trial is executed without error. In some cases, different choices for the design of a trial may result in very different costs, completion times, and/or other performance parameters for the trial.
The design of clinical trials may include considerations and tradeoffs between hundreds or even thousands of design options. Traditionally, the design of trials has been based on heuristics and experienced professionals to determine which set of parameters will result in a design that is likely to produce a successful trial. However, traditional approaches are not capable of evaluating more than a handful of design options and tradeoffs and may often miss design options that may result in better performance. The cost of a clinical trial may often exceed tens of millions or even hundreds of millions of dollars and may take years to complete, thus, small differences in the performance of a trial design may result in large impacts on the overall cost and time associated with corresponding trials.
The complexity of a trial design often requires aspects of statistical expertise, clinical design expertise, and software expertise, which may not be available in many organizations. As such, many organizations fallback on the use of generic study designs due to their inability to find optimal or near-optimal study designs.
A trial design platform, systems, and methods are described herein for evaluation and/or comparison of designs for a clinical trial. In embodiments, evaluation and/or comparison may include a large number of design options. In some embodiments, the platform, systems, and methods described herein may be used to evaluate hundreds, thousands, or even millions of design options for a clinical trial and may be used to find the optimal or near-optimal design for a trial.
The trial design platform may be used for trial design. In embodiments, a trial design platform may support a team in collaborating and surfacing all the inputs that are key to consider for preparing and selecting an optimal design. The trial design platform may use cloud and distributed computing so the team can simulate hundreds of millions of study design variants across all those inputs. The trial design platform may present the team with prioritized options and visualizations to enable the interrogation of the drivers of value. As used herein, a “team” may include a single individual or a group of individuals. Embodiments of the platforms disclosed herein may provide for collaboration within a single organization and/or across multiple organizations. In embodiments, an organization may be a business entity and/or a regulation authority, e.g., a governmental agency, and/or other entity charged with oversight and/or certification of clinical trials.
A trial design platform may enable a team to quickly identify optimal designs and the factors that most strongly drive performance factors, strategic goals, and the like. A trial design platform, as described herein, may leverage emerging technologies to provide options for advanced simulations, distributed computing, visualizations, and the like. The trial design platform may leverage methodological knowledge, analysis of the business value of different design choices, and/or analysis of regulatory risk and operational complexity to determine optimum or near optimum study designs. The trial optimization platform may determine optimum or near optimum study designs by leveraging a novel workflow, speed and/or computing innovations, and/or powerful visualizations for study analysis and optimization.
A trial design platform may improve how data and processes are used to make better decisions on clinical trial design. Improvements may result from recognizing which innovative designs might significantly increase goals. Improvements may be obtained by communicating the benefits of specific trial designs in a way that that intuitively allows a variety of team members to understand the design of a trial and/or possible options for the design of the trial. A trial design platform may support a team in collaborating and surfacing all the inputs that are key to consider for preparing and selecting an optimal design. The trial design platform may present the team with prioritized options and insightful visualizations to enable interrogation of the drivers of value.
The platform 104 may provide for a system for providing users with facilities and methods for designing, evaluating, and/or comparing designs. The facilities described herein may be deployed in part or in whole through a machine that executes computer software, modules, program codes, and/or instructions on one or more processors, as described herein, which may be part of or external to the platform 104. Users may utilize the platform 104 to identify trial designs for criteria, evaluate the designs, compare designs, determine optimal designs, and the like.
A user may interact with the platform 104 through one or more user devices 102 (e.g., computer, laptop computer, mobile computing device, and the like). The platform 104 may be implemented and/or leverage one or more computing resources 150 such as a cloud computing service 152, servers 154, software as a service (SaaS), infrastructure as a service (IaaS), platform as a service (PaaS), desktop as a Service (DaaS), managed software as a service (MSaaS), mobile backend as a service (MBaaS), information technology management as a service (ITMaaS), and the like. The platform 104 may be provided or licensed on a subscription basis and centrally hosted (e.g., accessed by users using a client (for example, a thin client) via a web browser or other application, accessed through or by mobile devices, and the like). In embodiments, elements of the platform 104 may be implemented to operate on various platforms and operating systems. In embodiments, interfaces for the user device 102 through which the users may interact with the platform may be served to the user device 102 through a webpage provided by a server of the platform 104, an application, and the like.
The platform 104 may include one or more facilities such as a configuration facility 106, simulation facility 110, analysis facility 108, interfaces facility 112, data facility 138, and computation resources 150.
The configuration facility 106 may include advisors 114, which may include one or more wizards, tools, algorithms, recommenders, configuration elements, questioners, and the like. Advisors may be used to receive data and/or define or develop space definitions 116. Space definitions 116 may include aspects of criteria space. As used herein, criteria space may include the set of parameters and values of the parameters that define goals for a design. Criteria space may define initial parameters for narrowing the design space before optimization. Parameters may include goals of designs, endpoints, primary objectives, secondary objectives, and the like. Criteria space may define values, ranges of values, types, ranges of types, and the like that may define general characteristics of a trial design.
Space definitions 116 may include aspects of design space. As used herein, design space may include the set of parameters and values of the parameters that define different options and variations of designs. Parameters may include design type, dose of drug, frequency of drug, maximum duration, patient inclusion/exclusion criteria, randomization type, and the like. The design space may include all possible permutations of the parameters. For example, one design type may be configured with different doses of a drug and different frequency of the administration of the drug. The design space may include all possible permutations of the different doses of the drug for all the different frequencies of the administration of the drug. The design space may include all the permutations of all the parameters associated with design. The design space may include millions of possible design variations. A trial design platform may evaluate all permutations of parameters of the design space. A trial design platform may evaluate a partial set of permutations of parameters of the design space. The partial set of permutations may be defined by a user. The partial set of permutations may be automatically defined, such as according to the criteria parameters.
Space definitions 116 may include aspects of scenario space. As used herein, scenario space may include the set of parameters and values of the parameters that define different options and variations of scenarios associated with designs. Scenario space may define the parameters of the environment associated with a design. Parameters may include population enrollment rate, dropout rate, population statistics, and the like. The scenario space may include all possible permutations of the parameters. For example, one scenario may be configured with a range of values for population enrollment rate and a range of values for patient dropout rate. The scenario space includes all possible permutations of the population enrollment rate and the patient dropout rate. The scenario space may include all the permutations of all the parameters associated with scenarios. The scenario space may include millions of possible scenario variations. A trial design platform may evaluate all permutations of parameters of the scenario space. A trial design platform may evaluate a partial set of permutations of parameters of the scenario space. The partial set of permutations may be defined by a user. The partial set of permutations may be automatically or semi-automatically defined, such as according to the criteria parameters.
Space definitions 116 may include aspects of performance space. As used herein, performance space may include the set of parameters and values of the parameters that define the evaluation criteria for a design. Parameters may include: net present value (NPV), expected NPV, incremental NPV, study cost, incremental study cost, study budget, incremental study budget, time to complete, incremental time to complete, time to market, incremental time to market, clinical utility, incremental clinical utility, probability of regulatory acceptance, incremental probability of regulatory acceptance, probability of success, incremental probability of success, statistical power, incremental statistical power, number of patients, incremental number of patients, number of sites, incremental number of sites, study complexity, incremental study complexity, operational complexity, incremental operational complexity, dose selected, incremental dose selected, statistical design, incremental statistical design, peak revenue, revenue at year five (5), other revenue numbers, incremental revenue, market introduction, whether market introduction beats competition entry, number of treatment arms, hypothesis superiority/equivalence/non-inferiority, other choices around statistical design, treatment effect, hazard ratio, and other choices around estimating the characteristics of the patient population, response, and safety profile, screening criteria, dropout rate, and other choices around modeling/estimating the characteristics and behaviors of the patient population and other factors that impact how the study evolves and its likelihood of achieving its goals (how slowly/quickly patients enroll, etc.), site payments and other choices around operational aspects of the study that can impact how the study evolves and its likelihood of achieving its goals, cost per patient, cost per site, or other cost factors, selections made in other projects (across users within customer companies or organizations and across all users of the platform), priorities set by the customer company or organization, and/or other user-defined filters based on available inputs and outputs of the platform or in the systems and methods described herein. In embodiments, any of the parameters and variables described herein may be incremental parameters and variables. Designs may be evaluated and compared against all of the parameters of the performance space or a subset of the parameters of the performance space. A set of designs may be evaluated for one or more of the performance parameters. The performance parameters and the values of the performance parameters of designs define the performance space of the set of designs.
The configuration facility 106 may include a combinations component 118. The combinations component 118 may automatically or semi-automatically define the design space and/or scenario space that may be evaluated by the platform.
The simulation facility 110 of the platform 104 may, based on the space definitions from the configuration facility 106, evaluate the trial designs. The simulation facility 110 may include models 126. As used herein, a model includes the combination of parameters and the values that describe a design and the scenario under which the design is evaluated. Models 126 may include hundreds or even thousands of models. Models 126 may include deviation specifications for one or more of the parameters of the models. Deviation specification may define a range of values, a distribution of values, and/or a function of values for one or more parameters of a model. The deviation specifications may be based on expected or previously measured distributions or variations in design parameters.
The simulation facility 110 may include engines 128. As used herein, engines may relate to the codification of a design that can receive model parameters and run a simulation to generate an output. The output of the engines 128 may be a predicted behavior for a design for one or more scenarios and/or conditions. Engines 128 may evaluate a design with analytical methods, mathematical methods, numerical methods, simulation, and/or the like. As used herein, simulation refers to the execution of a model using an engine. A simulation may be a single execution of model (one simulation instance) or a simulation run that includes more than one simulation instance. Evaluating a design may include a simulation run to determine performance of the design. Evaluating a design may include using a Monte Carlo approach to simulate a design for different values according to the deviation specifications and using statistical methods to determine the performance of the design from a simulation run.
The simulation facility 110 may include search/exploration component 130. The search/exploration component may facilitate modification of model parameters for simulation. The search/exploration component 130 may adaptively modify or generate models for simulations based on simulation results of other models/designs and/or based on triggers and data from other facilities of the platform 104.
The analysis facility 108 may be configured to analyze simulation results of designs. The analysis facility 108 may include a filtering component 120. The filtering component 120 may be configured to use one or more numerical and/or analytical methods to evaluate and compare the performance of evaluated designs. The filtering component may identify optimal or near-optimal designs for one or more performance parameters. The filtering component may search the performance space and identify a set of optimal and/or near optimal designs for one or more performance parameters.
The analysis facility 108 may include a recommendation component 122. The recommendation component 122 may provide design recommendations. The design recommendations may be based on optimal or near-optimal designs determined by the filtering component 120. Recommendations may be adaptive based on settings, feedback, selections, triggers, and the like from the user, and/or other facilities in the platform 104.
The analysis facility 108 may include an augmenting component, 124. The augmenting component may supplement simulation results with real-world data.
The interfaces facility 112 may be configured to provide visualizations and interfaces for comparing, searching, and evaluating simulated designs. Visualization component 132 may provide for one or more interfaces to visualize the performance of designs and facilitate comparison of designs by a user. The feedback analysis component 134 may track user actions associated with the interfaces and visualization to determine patterns and/or preferences for designs. The tradeoff advisor component 136 may analyze and provide data and guidance for evaluating tradeoffs between two more designs.
The platform 104 may include and/or provide access to one or more data facilities 138. Data in the data facilities may include design histories 140, simulation data 142, site data 144, resource data 146, population data 148, and the like.
The stages of the process may include an evaluate stage 204. The evaluate stage 204 may configure models 218 for evaluation using simulation 220 and analytical methods 224. The stage may include various methods of enhancing computation and simulation using parallelization and resource management 222.
The stages of the process may include an augment stage 206. The augment stage 206 may add real-world data to the simulation data. Financial data 226, regulatory data 228, revenue data 230, and the like may be added to the and used to augment data from simulations.
The stages of the process may include an explore and analyze stage 208. The explore and analyze stage 208 may include filtering methods and algorithms 232 for identifying optimal designs. The stage may include generating and interacting with visualizations 234 and tradeoff analysis tools 236 to compare and select designs.
In embodiments, the platform may be configured for identification and confirmation of globally optimal trial designs. Optimality of trial designs may be in relation to optimality criteria. Optimality criteria may be determined in relation to the performance space of designs. Optimality may be in relation to one or more performance parameters and the values of the performance parameters. An optimal design may be a design that achieves a most desirable value for one or more specific performance parameters. A most desirable value may depend on the performance parameter and may be different for each performance parameter. In some cases the most desirable value may be the highest value of a performance parameter. In some cases, the most desirable value may be the lowest value of a performance parameter. In some cases, the most desirable value may be a range of values, a specific value, a function of values, and the like. For example, in some cases an optimal design with respect to a cost performance parameter may be a design that has the lowest cost and achieves the goals of the clinical trial. As another example, an optimal design with respect to a time performance parameter may be a design that has the highest NPV and achieves the goals of the clinical trial. Optimality may be determined for different design types and/or different phases of a trial. In embodiments different optimality criteria may be used for different designs and/or different phase of a trial.
In embodiments, an optimum design is a design that achieves most desirable values for two or more specific performance parameters. In the case of optimality for multiple performance parameters, optimality may require a tradeoff between the parameter values. For example, a design that has the lower cost may have a low NPV and therefore may not be desirable. The optimality of a design may be based on a function of performance parameters. In some cases, a function may be a weighted sum of the performance parameters. A function, or a set of functions, may be used to generate an overall score (or a set of scores) and the score may be used to determine the optimality of the design. A highest score, a specific score, lowest score, and the like may be considered optimal depending on the function used to compute the score.
In embodiments, optimality may be evaluated according to Pareto optimality. Pareto optimal designs may be designs where no individual performance parameter can be better off without making at least one other individual performance parameter worse off. In some cases, optimality may be determined using convex hull analysis.
In some cases, one design may be globally optimum. In some cases, more than one design may be globally optimum. In some cases, no designs may be globally optimum. In some embodiments, optimality of designs may be relative to a benchmark. A known design, a set of historical designs, and/or the like may be used as a benchmark. Designs may be considered optimal if they meet, exceed, and/or are within a threshold distance of the benchmark design performance parameters.
Performance parameters that may be used to determine design optimality may be user defined, system defined, algorithmically defined, and/or the like. In some cases, users may specify a subset of performance parameters that should be used to identify optimal designs. A user may define optimality criteria by defining ranges, values, characteristics, and the like of the parameter values that may be considered desirable and/or optimal. Interactive graphical interfaces may be provided to a user to evaluate different designs based on one or more optimality criteria. Interactive interfaces may allow a user to explore different designs by changing scoring methods, weights associated with the criteria, and the like.
In embodiments, the characteristics of performance parameters for evaluated designs may be analyzed by the platform to determine if any of the parameters may be less important for optimality. For example, analysis may include evaluation of ranges, variability, and other statistical analysis. If one or more performance parameters for all evaluated designs is within a desirable range, or the performance parameter is almost equal for all of the evaluated designs, the performance parameter may be removed and identified as less significant for optimality and, in some cases, may not be factored in when determining optimality. Prior to determining optimality on based on performance parameters, the performance parameters and the values of the performance parameters may be grouped, filtered, normalized, and the like.
Optimality of designs may be redefined automatically, semi-automatically, in response to user input, and/or the like. The criteria for optimality of designs may change as designs are evaluated by the platform. For example, initial optimality criteria may produce no optimal designs. In response to no optimal designs being determined, the criteria may be changed (relaxed, increased, decreased, etc.) until at least one design is considered optimal. In another example, optimality criteria may change in response to user feedback. Users may evaluate initial designs found to be optimal and provide feedback (direct feedback and/or indirect feedback that can be derived from user actions and inactions). The feedback from the user may be used to change how optimality is determined, which performance parameters are used to determine optimality, the values of the performance parameters that are considered optimal, and/or the like.
In some embodiments, performance parameters may be grouped, ordered, and/or organized into one or more hierarchies, groups, and/or sets. Two or more different optimality criteria may be used in parallel to determine multiple sets of optimal designs under different criteria. Two or more different optimality criteria may be used sequentially to determine optimal designs. One criteria may first be used to identify a first set of optimal designs under first criteria. A second set of criteria may then be used on the first set to reduce the set of optimal designs.
In embodiments, a design may be globally optimum if the design is optimal with respect to all possible design options. In embodiments, a design may be globally optimum if the design is optimal with respect to possible design options for one or more criteria. In embodiments, a design may be globally optimum if the design is optimal with respect to a large percentage (such as 80% or more) of possible design options for one or more criteria. In embodiments, a design may be globally optimum if the optimality of the design is within a high confidence level (90% confidence) with respect to possible design options for one or more criteria.
Traditional methods for evaluating designs cannot determine global optimum designs since they evaluate one, several, or a small subset of design options. Traditional methods do not consider all or almost all of the design options and cannot find a global optimum.
Trial designs may involve numerous variables, parameters, considerations, tradeoffs, and the like resulting in a very large number of possible variations. A large number of possible variations makes study design and optimization using traditional methods difficult. In many cases, traditional methods may fail to explore or consider the complete space of possible trial design options and may miss or never consider globally optimal designs. Using traditional methods, the number of design variations that may be explored in a reasonable time is limited. In some cases, only one (1) statistical design and only three (3) clinical scenarios may be evaluated. The best design study of the limited number of variations may not result in a globally optimal design. A locally optimum design chosen from a limited number of considered designs may represent one (1) local maximum but may be far from the globally optimum design. When 10,000 or more clinical scenarios are considered, a globally optimum design may be distinguished from the many locally optimum designs. However, consideration of 10,000 clinical scenarios cannot be practically performed using traditional methods as it would require an estimated 50,000 hours or more to complete.
In embodiments, the platform and methods described herein may evaluate thousands or even millions of design options enabling a determination of a global optimum design. In many cases, the globally optimum design may have significant advantages over locally optimum designs. In one example, a globally optimum design may require less time to complete than other designs.
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In embodiments, the platform may be configured for identification and confirmation of globally optimal trial designs across one or more of design space, scenario space, criteria space, or performance space. In embodiments, the determination of an optimum design requires a careful balance to ensure that relevant parameter permutations are considered but that time, cost, and the like are not wasted on needless simulations and evaluation of designs that are not relevant. In embodiments, the platform enables the surfacing and consideration of all relevant parameters for evaluating a design while not needlessly wasting resources.
In embodiments, the platform may support global optimization of clinical trial design by connecting criteria space, design space, scenario space and performance space. The platform may provide users with visualizations for interactive exploration of the spaces. The platform may support global optimization by enabling design optimization and exploration across different styles of explorations. Users of different experience, knowledge, and/or expertise may explore or optimize for elements that are within their expertise/knowledge and share and explore data with users of the same or different expertise/knowledge.
In embodiments, globally optimum trial design may include defining criteria space. In some embodiments, defining and configuring criteria space may be a prerequisite to defining and configuring other spaces. Configuration space may be at least partially defined and configured by a user. In some embodiments, expert users may define all or a large portion of the criteria space. In some embodiments, a user may directly define a portion of the criteria space and/or provide general aspects or goals for the study and the platform may use one or more advisors (such as the design advisor described herein), historical data, and AI/ML models of historical study data to define and configure the criteria space. In embodiments, the criteria space definitions may be used by the platform to determine parameters for design space, scenario space, and/or performance space. In embodiments, the scenario space parameters may be automatically reviewed for consistency and errors and any contradictions in parameters may be flagged for review by a user.
In embodiments, scenario space parameters may be analyzed to determine the breadth of the constraints of the parameters. In some cases, the platform may determine or estimate aspects such as size of the design space (for example, number of design options that will need to be simulated), complexity of the design space (for example, number of parameters) size of the scenario space (for example, number of scenarios that will need to be simulated), complexity of the scenario space (for example, number of parameters), size of the performance space (for example, number of performance parameters that need to be tracked in simulation), and the like based on the configuration of the criteria space. The estimates on sizes, complexity, and the like may provide a guide as to the breadth of the criteria space definitions. The estimates may be determined from historical data, may be algorithmically determined, and/or estimated via one or more tables that provide a correspondence between the criteria space parameters and other spaces.
In some cases, criteria space may be identified (automatically by the platform or by the user) as being too constricting (such as not resulting in a meaningful number of design options for simulation) or to broad (such as resulting in an extremely large number of design options to be simulated) and the platform may identify ways to broaden and/or narrow the criteria space. In one embodiment, parameters of the criteria space may include relations and dependencies. The platform may surface and identify criteria space parameters to add (typically to narrow the breadth) or to remove certain constraints from the criteria space (typically to increase the breadth) based on the relations and dependencies in the parameters.
In embodiments, the criteria space definitions may be used to define the design space. Design space definitions may include ranges of values for one or more design space parameters. The design space may be developed by defining design options by taking a cross product of all the permutations of the values of the design space parameters. Each of the resulting design options may be verified to determine if the permutation of parameters for the design resulted in a valid design option and/or consistent with the criteria space constraints. Invalid permutations may be removed or flagged to avoid needless simulation.
In embodiments, the criteria space definitions may be used to define the scenario space. Scenario space definitions may include ranges of values for one or more scenario space parameters. The scenario space may be developed by defining scenario options by taking a cross product of all the permutations of the values of the scenario space parameters. Each of the resulting scenario options may be verified to determine if the permutation of parameters for the scenario resulted in a valid scenario option and/or consistent with the criteria space constraints. Invalid permutations may be removed or flagged to avoid unnecessary simulation.
In embodiments, a cross product of all the valid scenario options from the scenario space and all the valid design options from the design space may be used to generate models for simulation. Each of the resulting scenario-design permutations may be verified to determine if the permutation resulted in a valid permutation and/or is consistent with the criteria space constraints. Invalid permutations may be removed or flagged to avoid unnecessary simulation.
In some embodiments, the set of scenario-design permutations may be pruned to remove permutations that are determined to have poor performance parameters or are predicted to not meet the criteria. In some cases, a database of previous simulations may be compared to the set of permutations to identify preliminary predictions.
Models for the valid scenario-design permutations may be simulated using one or more engines to determine performance of the designs. The simulations may track and evaluate performance space of each design according to the criteria space definitions. The simulated data may be analyzed to determine optimum designs. Various visualizations and analysis interfaces (such as card interfaces, heat maps, and tornado diagrams as described herein) may be provided by the platform for visualizing and identifying performance of designs. The systematic development of criteria, design, scenario, and performance spaces and their respective permutations ensures that all relevant design options are considered and evaluated for determining globally optimum design options.
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Each node 1216 may represent one or more modules and/or processes included in the execution flow 1212, wherein the arcs 1218, e.g., arrows, connect the nodes 1216 so as to define the flow of data from one node 1216 to another. Non-limiting examples of the types of processes the nodes 1216 may represent include: an execution engine from component 128 (
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User types may include simulation engine designers, visualization designers, optimization professionals and/or the like, and may be subdivided into skill levels, e.g., expert, intermediate, and/or novice. Configuration levels may provide for different levels of access over parts of an execution flow and may be categorized as high, medium, or low, wherein a high level provides for more access than a medium level which provides for more access than a low level. In embodiments, other classification schemes for user types and configuration levels are provided.
For example, a first instance/view of the interface 1410 may be configured for a first user type 1510 and a second instance/view of the user interface 1412 may be configured for a second user type 1512. In embodiments, the user types may correspond to skill levels and/or different specialties with respect to clinical trial design. For example, the first user type 1510 may be a subcategory of a user type 1514 corresponding to a simulation engine designer. User type 1510 may correspond to an expert simulation engine designer and have sibling types corresponding to intermediate simulation engine designer 1516 and/or novice simulation engine designer 1518. User type 1512 may be a subcategory of a user type 1520 corresponding to a visualization designer. User type 1512 may correspond to a novice visualization designer and have a sibling corresponding to an expert visualization designer 1522.
Accordingly, view 1410 provides user type 1510 access to more functionality and/or control over configuration of the execution flow 1212 within an engine 1414 as compared to view 1412 for user type 1512. For example, interface 1410 provides access to nodes 1416 and 1418 within the engine node 1414, while interface 1412 provides only high-level access to the engine node 1414. Thus, interface 1410 allows an expert simulation designer 1510 to configure the execution flow 1212 internal to an engine while interface 1412 prevents a non-expert simulation engine designer 1512 from doing the same.
In embodiments, different user types may define parts of the execution flow concurrently. In other words, embodiments may provide for users to collaborate (concurrently or asynchronously) to design, conduct simulations, and perform analysis on clinical trial designs during both pre-simulation and post-simulation stages. For example, user type 1510 may configure the internals of the engine node 1414 at the same time user type 1512 configures a visualization node 1420. Thus, as will be appreciated, users in different geographic regions, e.g., cities, states/provinces, and/or countries, may work together on the same execution flow 1212. In embodiments, authentication and access control may be used to identify and authenticate users and control access to one or more functions and/or resources accessible by the platform. In embodiments, users may have different permissions allowing different access and actions. For example, some users may be provided with the ability for configuring a flow but require another user or another authorization level to execute the flow.
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In embodiments, apparatus for configuring execution flow may enable configuration and manipulation of scenario, design, performance, and criteria spaces. Each space may be separately configured by different users. Each space may be associated with one or more different nodes in the execution flow. The nodes corresponding to each space may be modified and/or replaced with a different version of the node to change aspects of any one of the spaces.
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In embodiments, the interactive wizard or algorithm may include a method of generating combinations that uses the permutations of designs and scenarios. In some embodiments, the combinations may be exhaustive, i.e., the combinations to be simulated include each possible design permutation combined with each possible scenario permutation (or, if infeasible permutations are first excluded, the combinations to be simulated include each feasible design permutation combined with each feasible scenario). Alternatively, in some embodiments, some combinations may be removed based on predicted performance. As discussed further below, a variety of heuristics, algorithms, filters, or the like may be used to predict that certain combinations are improbable or unlikely to achieve a desirable outcome. In some embodiments, analysis of data from past trials, or information input by one or more users, may indicate improbable combinations for which simulation would be of minimal value. For example, historical trial data and/or guidelines based on user experience may indicate a direct relationship between trial duration and patient dropout rates, such that a patient dropout rate below a certain level is unlikely to be achieved for a trial having a duration that exceeds a certain time period. Therefore, although combinations having certain patient dropout rates and certain trial durations may satisfy all selected criteria, it can be predicted that such combinations either cannot be achieved as a practical matter or cannot result in a satisfactory trial outcome. Therefore, such combinations can be removed prior to the simulation. As another example, analysis of past trial data may indicate that drug doses below a certain level are rarely effective in treatment of certain conditions, and combinations involving low drug doses may be predicted to perform poorly and therefore be removed prior to simulation. Also, as discussed further below, a scoring system may be implemented to predict performance and determine combinations that should be removed prior to simulation. The combinations that are determined to be appropriate for simulation (which may be all possible combinations in some embodiments or a subset of combinations in other embodiments) may be simulated and the performance of the simulated designs may be determined and analyzed. The evaluated performance parameters may be based on the criteria and/or based on goals or performance objectives other than the obtained criteria.
In embodiments, the advisor 1900 may be integrated into the platform 104, or the advisor 1900 may be a standalone system apart from the platform 104. In embodiments, the advisor 1900 may assist in obtaining input from a user to determine trial design criteria and/or trial design parameters, e.g., values for one or more of criteria space, design space, and/or scenario space, as described herein. User input may be obtained via one or more interactive interfaces, e.g., 1910, structured to generate one or more questions/user prompts, e.g., 1912. User inputs may be compared to historical data, such as data stored in data facility 138 (
Accordingly, in embodiments, the interactive interface 1910 may be a graphical user interface wherein the prompts 1912 may be textboxes, popup dialogue boxes, verbal questions played through a sound and/or video file, e.g., .mp4, .wav, etc. The interface 1910 may be provided though a web interface, e.g., provided through cloud services 152 (
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In embodiments, the prompt 2100 may include recommendation fields 2116 which may present one or more recommended values to a user for one or more trial design criteria and/or design parameters. For example, a user may inform the interface 1910 that they intend to optimize a clinical trial of a titration design. The advisor 1900 may then query one or more databases in the data facility 138 (
In embodiments, the user inputs may be compared to historical clinical trial designs selected by traditional (human) experts. For example, the data facility 138 (
In embodiments, artificial intelligence/machine learning approaches may be used to generate the prompts 1912 (
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In embodiments, the advisor may be configured to query and derive configurations for the designs, scenario, performance, and criteria space separately. The advisor and interfaces associated therewith may be configured to separate questions, wizards, and other interfaces such that configurations for the spaces are derived separately. The advisor may be configured to allow a first user configure the design space and another user configure the scenario space. In embodiments, user inputs such as type of therapeutic to be tested, budget, and the like may be used to configure the design space and or criteria space. In embodiments, user inputs such as number of patients may be used to configure the scenario space. In embodiments, user inputs such as desired cost or time to completion may be used to configure the performance space.
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Relative values may include values related to an objective or subjective scale. Relative values may include a scale (i.e., 0-1, 1-10, 1-100) and/or designators (i.e., high, medium, low). For example, evaluation data may include a relative scale of a complexity of a trial which may be based on the number of personnel involved, the steps in a protocol of the trial, and the like. Real-world data such as regulatory approval times may be used to estimate how long it will take to receive regulatory approval for the study. Real world data may include a history of the time required to receive approval for studies with similar relative complexity rating. The relative values may be supplemented with the real-world data by substitution and evaluation with respect to historical data and real-world data.
General values may include values or placeholders that may be mapped or representative of other data. The mapping and placeholder may comprise metadata. For example, a simulation output of a design may specify general values such as number of sites and patients needed for a study. Real-world cost data may be used to determine the real-world cost (in a local currency such as dollars, for example) for the trial based on the number of sites and number of patients. Real-world data may include an average cost for a patient and an average cost per site. The general values may be supplemented with the real-world data by computing or substituting the real-world cost associated with the number of patients and sites.
The simulations of the clinical trial designs may be based on one or more design space parameters, criteria space parameters, scenario space parameters, and/or additional types of input parameters suitable for simulating clinical trial designs. In certain aspects, one or more of the input parameters to the simulations of the clinical trial designs may have an estimated and/or predicted value. For example, the manufacturing cost of a subject drug for an intended clinical trial may be unknown at the time the simulations of the possible clinical trial designs (for testing the subject drug) are first executed/run. In such a case, the initial simulations of the clinical trial designs may use an estimated (or predicted) price of the subject drug. The estimated price of the subject drug, and/or other input parameters, may be based at least in part on historical data. Real data may then be used in computations to relate the simulation data to real-world or current values. Thus, in the foregoing example, the actual price of the subject drug, when it becomes available, could be used to augment the initial simulations.
Real-world data may also be used to associate relative values with real-world absolute values. For example, simulation data may identify general or relative parameters that may influence cost. Additional data (such as current cost data) may be used to determine how these general parameters translate to real dollar values. Relative data may be substituted with additional data to provide current values for cost, time, and other performance data. Relative and absolute values may be tagged with metadata for marking for substitution.
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The apparatus 2700 may further include a supplemental processing circuit 2714 structured to interpret/obtain 2612 supplemental data 2716. Non-limiting examples of supplemental data include: costs of a clinical trial; time to completion of a clinical trial; NPV of a clinical trial; actual personnel costs of a clinical trial; or actual facility costs of a clinical trial. In embodiments, the supplemental data 2716 may be derived, e.g., collected, from one or more clinical trial sites 144. The apparatus 2700 may further include a relation determining circuit 2718 structured to determine 2614 a relationship 2720 between the simulated output dataset 2712 and the supplemental data 2716. Non-limiting examples of relationships include related units, related data tags, timestamps, user defined relationships, semantic analysis, and/or the like. In certain aspects, the relationship 2720 may be based at least in part on metadata, labels and/or unit values. The apparatus 2700 may further include a supplemental data modification circuit 2722 structured to generate 2616 modified supplemental data 2724 based at least in part on the relationship 2720. Non-limiting examples of modified supplemental data include financial data, regulatory data, revenue data, and the like. The apparatus 2700 may further include a substitute circuit 2726 structured to generate 2618, based at least in part on the modified supplemental data 2724, substitute data 2728 of/for the simulated output dataset 2712. Non-limiting examples of substitute data 2728 may include costs, time, number of personnel, available sites, number of enrolled patients, and/or the like. The apparatus 2700 may further include a substitute data provisioning circuit 2730 structured to transmit 2620 the substitute data 2728. The substitute data provisioning circuit 2730 may be in communication with, or integrated into, a network interface card that communicates with one or more remote devices via a network. The substitute data provisioning circuit 2730 may format the substitute data 2728 into a network specific format.
In certain aspects, the apparatus 2700 may further include a graphical user interface circuit 2732 structured to generate graphical user interface data 2734 for generating a graphical user interface that facilitates user control over augmentation of the simulated data. As such, the apparatus 2700 may further include a user input data processing circuit 2736 structured to interpret user data 2738 entered into the graphical user interface. For example, the graphical user interface may provide for the user to enter the supplemental data 2716 and/or provide instructions to the apparatus 2700 as to where and how the supplemental data 2716 may be acquired, e.g., downloaded from remote databases.
In embodiments, the substitute data 2728 may be used to replace corresponding parameters that were used to generate the simulated output dataset 2712 so that new simulations can be executed/run with more accurate data. In certain aspects, the substitute data 2728 may be included in one or more reports and/or displays, e.g., via the graphical user interface provided by the graphical user interface circuit 2732. For example, the graphical user interface may depict differences between the simulated output dataset 2712 and the substitute data 2728. In embodiments, the graphical user interface may depict differences between the simulated output dataset 2712 and an updated simulated output dataset derived from re-running the clinical trial design simulations, used to generate the simulated output dataset 2712, with the substitute data 2728.
As will be appreciated, use of supplemental data 2716, as described herein, may provide for improved accuracy with respect to simulating clinical trial designs. Further, by providing for the ability to augment simulated outputs, embodiments in accordance with method 2600 and/or apparatus 2700 may provide for earlier planning of a clinical trial, as possible clinical trial designs can be first simulated with estimated data, thus enabling other planning processes to begin and/or proceed, with the simulated data being adjusted based on real data at a later point in time.
In some embodiments the simulation models may include various parameters and data that are used by simulation engines to evaluate designs. Model parameters may be separated into different categories. Model parameters may be separated based on delineated expertise of teams. In some cases, members of a team may have different specializations. For example, some members may specialize in building human behavior models, while others may specialize in trial design models. Separating or grouping the parameters may allow different team members to independently optimize and improve specific aspects of models. In some embodiments, the model parameters may be separated into two or more types based on convenience, expertise, flexibility, and the like. Separation of parameters may provide for new and faster methods for simulation, analysis, optimization, and the like when the separation of parameters is at least partially maintained and propagated through the simulation and analysis components of the platform.
In embodiments, model parameters may be separated into at least two types or categories. Model parameters may be grouped to include parameters that define the trial design space and clinical scenario space. The trial design space may include one or more parameters that are related to protocol design, dosing algorithms, subject selection, demography, blinding of subjects, measurements to be performed, study length, and the like. The trial design space may include one or more trial design types with a combination of design variables. The trial design may specify how data will be analyzed. The design space may further include deviation models for one or more of the parameters of the design models. Deviation models may be based on expected or previously measured distributions or variations in the design.
Trial design space may further include experimental design data, adaptation rules data, and analysis model data. The experimental design data may include data, parameters, variables, and the like related to sample size, number of sites, accrual durations, allocation ratio, and the like. The adaptation rules data may include data, parameters, variables, and the like that specify the number of interim analyses, the timing of the interim analyses, boundaries, and the like. The analysis model data may include data, parameters, variables, and the like that specify test statistics, type one (1) error, and the like. In embodiments, each data, parameter, variable, and the like may have a set and/or a range of acceptable, realistic, or practical values. In embodiments, a set of trial designs may be generated wherein each trial design may have a different combination of data, parameters, variables, and the like. In some cases, the combination of different possible data values, parameters, and/or variables may result in thousands or millions of different trial design options.
Scenario space may include environmental and external factors that may affect trial design. In some embodiments, scenario data may include one or more mathematical or numerical models and methods that are related and/or describe one or more of human behavior, disease progress, drug behavior, and the like. Scenarios may include a combination of environmental variables that provide a specification or guidelines for generating virtual patient populations for a design study. Human behavior inputs may include trial execution characteristics, including how subjects adhere to regimen, dropout rates, and the like. Drug behavior may include models of drug behavior in a body and may include pharmacokinetic and pharmacodynamic models. The inputs may further include deviation models for one or more of the parameters of the models. Deviation models may be based on expected or previously measured distributions or variations in aspects such as human behavior, demographics, and the like. In embodiments, a plurality of different scenarios may be generated as potential inputs to the platform wherein each scenario may include different aspects of human behavior, disease progress, and drug behavior, and the like.
In embodiments, simulation models may be generated by combining two or more categories of inputs, such as by combining design space and scenario space. In embodiments, design space and scenario space may be defined separately and combined to generate models that include the two spaces. Generating the models from the two spaces may involve generating permutations of the two spaces. In one embodiment, a cross product between each scenario in the scenarios space and each design in the design space may be used to generate models. In this configuration, a large number of models may be generated from a much smaller set of designs and scenarios. In embodiments, millions of models may be created from design and scenario spaces that correspond to only thousands of designs and scenarios.
In some embodiments, the trial and clinical spaces models may be selectively combined, such that some instances of trial designs and clinical scenario models are not combined to create simulation models. The selective combination may reduce the number of simulation models that are simulated by the system, thereby reducing computation time. In some embodiments, a variety of heuristics, algorithms, filters, and the like may be used to select a subset of all possible combinations of trial and scenario spaces to reduce the number of simulation models, eliminate improbable combinations, and the like. In some embodiments, models may be scored before they are simulated. The scoring may be based, at least in part, on the feasibility, probability, practicality, or the like of the scenario-design combination for each model.
In embodiments scoring may be based on rating and/or priority associated with the design space parameters and/or scenario space parameters in each model. Ratings and/or priority may be provided by a user and/or other parts of the system. In some embodiments, rating and/or priority may be determined from historical data from previous simulations and design studies. The ratings and/or priority may be determined based on the number of occurrences of the parameter in the historical data in similar designs studies. In some embodiments the ratings and/or priority may be determined on the number of occurrences of the parameters in designs that were identified as optimal or desirable in previous designs studies. Ratings and/or priority score may be used to determine a relevancy score. The relevancy score may be computed as function of the ratings and priority score such that the higher the ratings and/or priority score the higher the relevancy score. Models that score below a threshold may be flagged or removed such that they are not simulated.
After the simulation models are created, the platform may execute and evaluate the simulation models. In embodiments, each simulation model (i.e., a specific combination of a trial design and scenario) may be evaluated over the course of numerous simulation runs, and the number of simulations may vary depending on the project stage. Each simulation run may be based on a different deviation of the trial design and/or scenario according to the respective deviation models. Results from multiple simulation runs for a particular simulation model may be analyzed to determine performance parameters.
In embodiments, results of simulations may be organized and grouped according to their relation to design and scenario space. Performance parameters of each model after simulation may be grouped to show relations of each parameter to one or more aspects of a design and/or scenario models. The relations may be used to refine aspects of the design space and/or scenario space for additional evaluation.
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In embodiments, simulations may require population models to evaluate a design for virtual subjects. Population models may define characteristics of subjects in a clinical trial. A trial design may define aspects of subjects that should be included in a trial. A trial design may define inclusion and exclusion criteria for subjects based on characterizations of demography, disease status, and the like.
In embodiments, for a simulation, virtual subjects may be selected from population models. A population model may include subject models that include various subject characteristics such as demography data, survival models (control and treatment), dropout rate (control and treatment), expected responses, and the like. Characteristics of subjects in a population model may be associated with different distributions. The distributions of parameters of the population model may correspond to real-world population models. In embodiments, when a subject is included in a simulation, a population model may be evaluated to determine characteristics for a subject for one simulation instance. For each simulation instance, the population model may be evaluated (with a random value for selection) to identify a new subject and the subject may be selected based on inclusion/exclusion criteria of the trial.
In embodiments, a virtual population may be pre-generated. The virtual population may be generated according to a population model and/or real-world population data. The virtual population may be a list or other data structure that includes thousands or even millions of different virtual subjects. Each subject in the virtual population may be associated with characteristics such as demography data, survival models, dropout rate, expected responses, and the like for each subject. For a simulation, a subject may be selected from the virtual population (randomly or based on another function) for simulation of a trial design.
In embodiments, a virtual population 3002 may be pre-generated before simulation start or may be generated in real time during simulation. In some embodiments, subjects may be generated as they are needed and/or requested for simulation using population models and the subjects may be added to a virtual population each time it is generated. The virtual population may grow as simulations and analysis of designs progresses. The virtual population may be a data structure (such as a database, list, table, and the like) that may be configured to retrieve data for a subject or a group of subjects randomly, according to specific subject characteristics, according to an unique identifier of the subject, and the like. Subjects in the virtual population may be used for simulation of trials. Simulation instance 3014 may include characteristics of a subject. The subject for the simulation may be selected from the virtual population 3002. A simulation instance may evaluate a design for the subject for a specific design and scenario combination 3014. Simulations may include a plurality of simulation instances 3014, 3016, 3018 using different subjects from the virtual population and variations of design and scenario combinations 3008, 3010, 3012.
In embodiments a subject for a simulation instance 3008 may be selected from the virtual population 3002 randomly, based on a function of the characteristics of the subjects, by a unique identifier associated with each subject, and the like. In embodiments, each simulation instance may be associated with a unique identifier of a subject used for simulation. The virtual population may be used for all simulations of a study. Simulations instances may be reproduced with the same subject from the virtual population by saving a unique identifier associated with the subject with the simulation instance in a simulation history record.
In embodiments pre-generated virtual populations may have several benefits over subject selection from a population model. Subject selection from a virtual population may decrease computation time since a population model does not need to be evaluated for simulation instance and requires a simpler selection from a population (such as a selection from a list or table). Virtual populations provide for enhanced reproducibility given a constant population and improved accuracy of results across multiple simulations given constant population. In embodiments, due in part to the reproducibility aspects, pre-generated virtual populations may enable easier and faster computations of counterfactual data.
In embodiments, simulations may include determination of counterfactual data for a trial. Counterfactual data may relate to data that would have been observed under different (often conflicting) configurations of a trial. For example, if a trial provides data about an outcome of a patient that receives a therapy, counterfactual data may be data that relates to an outcome of the same patient if they did not receive a therapy. Normally, counterfactual data cannot be observed in a real-world trial. Continuing with the example, a patient, in a real-world trial can receive a therapy or not receive a therapy, but not both since the two configurations are conflicting. In a real-world trial, a patient can only be in one of two groups and therefore only one possible configuration of trial can be observed. The data related to a configuration that is not observed by a trial may be counterfactual data.
In another example, a trial may have missing data when patients drop out of the trial. The missing data is the data that would have been observed had the patient not dropped out of the trial. Missing data cannot be observed in a real-world trial but may be determined using simulation. Missing data (which may be a type of counterfactual data) may be determined by simulating a trial design configuration for when a patient drops out of the trial and a configuration where the same patient does not drop out of the trial.
A trial design simulation may determine what is expected to happen in a trial and what could have happened in a trial given a different configuration (such as counterfactual data). Counterfactuals may be used to determine estimands for a true effect of a treatment. In embodiments, counterfactual data may be used to determine how good a trial is at estimating the estimands of interest using the observables of a trial. In embodiments, estimands determined from counterfactual data may be used to configure a trial design parameter (such as population size) to enable a trial design to come close to estimating the estimands.
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Interactive methods can be used in the process of evaluating designs, conducting simulations, configuring a design study (such as pre-simulation)s, and the like. Interactive methods may be methods in which a person or an alternate algorithm acts as a decision-maker and interacts with the methods, systems, and platform to indicate a preference for aspects of the outcomes and/or input. The preferences may be used to determine other inputs and/or outputs that relate to the preferences.
In embodiments, interactive methods may be used to identify preferences for trial designs. The preferences in trial designs may be used to identify optimum designs based on the preferences. The preferences in trial designs may be used to identify other designs that are similar to the preferences, surface design options that are complementary to the preferences, determine ranking of desired aspects of designs, determine unwanted features, and the like.
In embodiments, interactive methods may include providing a comparison and tracking selections in response to the comparison. In embodiments, configuration parameters may be presented to a user. Aspects of criteria space, design space, scenario space, and performance space may be presented before simulation. Parameters may be presented as a comparison between different parameters and/or values of the parameters. User input may an interaction between the values or parameters shown. Interactions may be used to identify preferences for parameters and/or values for parameters.
In embodiments, results of simulations may be presented to a user. Performance of simulated designs may be presented to a user via an interactive interface. In one embodiment, the interactive interface may present results of simulations as a comparison between two or more simulated designs. User input may include a selection of a preference between the designs, saving of one or more of the presented designs, indicating an interest in one or more parameters of the design and the like.
Interactive interfaces may be used to present two or more performance parameters of a simulated design to a user. In one embodiment the user may specify a preference for a design. Based on the tracking of the selection, one or more user preferences may be determined. User preferences may be identified from the user selecting a design, saving a design, dismissing a design, moving a design, and the like. In embodiments, preferences may be determined by identifying differences between the presented designs the designs associated with a user action.
In some embodiments, designs presented for consideration in an interactive interface may be selected based on results of optimality determination based on Pareto analysis and/or CH analysis. In some embodiments, designs presented for consideration in an interactive interface may be selected randomly from the set of designs.
Designs presented for consideration in an interactive interface may be selected such that an interaction with of one or more design in the interface provides useful information about preferences of a user. Designs may be selected for presentation may be selected such that they are substantially similar is most parameters and different with respect to a small number of parameters (such less than 10). Having substantially similar designs for comparison may provide a clear indication which parameters and/or values are preferable to a user when an interaction with the designs is observed. In embodiments, designs may be selected such they represent very different designs. The designs may represent different ends of the spectrum with respect to the overall design (designs may differ in more than 10 parameters). Having designs that represent vastly different designs for comparison may provide a clear indication of the overall properties and types of designs that are preferred.
In embodiments, information inferred from interactions may be directly related to the parameters and values for which interactions were received. In some embodiments, information inferred from interactions may be derived for parameters and values for which interactions were received. Interactions related to one parameter or a design may provide additional information about other parameters. For example, interactions related to cost of a study may be used to determine preferences for the cost and/or other related parameters such a duration (longer studies may typically be more expensive), number of patients (more patients may require more sited and more cost), and the like.
In embodiments, interactive interfaces for identifying preferences for designs may be iterative and may require multiple interactions from a user to determine preferences. In the case of an interactive interface based on a comparison, the interface may iterate over multiple cycles of presenting designs and receiving user selections. In each iteration, the interactive interface may present a different set of designs for consideration and monitor user interactions with the designs. In each iteration, the set of designs may be strategically selected to determine different aspects of preferences from user interactions. For example, in first iteration the designs shown on the interface may be selected to identify preference for design type, in the second iteration, the designs may be selected to identify preference for a first parameter.
Once preferences are identified designs, such as optimal designs, may be determined for the preferences.
In embodiments, interactive methods may be used to identify regions of interest and/or identify additional designs for simulation. Initial simulations may be coarse grained simulations. Coarse grained simulations may not be exhaustive but may be used to provide a course grid of designs that provides an overview of the designs and performance for identified criteria by simulating subset of the possible combinations. Some of the simulated designs from the coarse set of simulations may be presented to a user. User interactions with the presented designs may be used to identify types of designs and parameters of the designs that may be further explored with simulation.
In embodiments, an interactive method for identifying regions of interest may include an interface such as a map that shows relative and/or absolute performance of designs and their parameters. The interactive interface may be used to visualize the locations of designs in the performance space. Users may select regions of interest and the platform may be directed to identify designs that may be in the regions of interest for further simulation and evaluation.
In embodiments, an interactive method for identifying regions of interest may include an interface that identifies one or more designs from the coarse grid of designs. The designs and the properties and performance of the designs may be presented to a user and the user interactions with aspects related to the design may be tracked. Based on the interactions, user preference for the design may be determined. Additional designs may be presented to the user to determine preference for additional designs. Based on the interactions and preferences for designs, a region or an area in the design space may be identified as being an area of interest. An area of interest may include an area around a design (such as all designs within an ε-distance of a design). An area of interest may be an area between two designs. An area of interest may be an area bounded by three or more designs (such as a triangular area bounded by three designs). The area of interest may be used as a guide for additional simulations. Additional simulations may be conducted on the designs that are in the area of interest.
In embodiments, interactive interfaces may be in connection with sensitivity analysis of designs. Interactions with the interface may be monitored to determine preferences for designs with respect to sensitivity and/or robustness of the designs. User interactions with interfaces for interacting with graphical elements for specifying filters, designs, regions, and the like may be tracked to determine which aspects of a design the user analyzes the most with respect to sensitivity of the design. The interactions may be tracked to determine minimum and/or maximum acceptable values for one or more parameter variations.
In embodiments, user interactions with interactive interfaces may be recorded and saved. In some embodiments, interactions with interactive interfaces may be processed to derive relevant data from the interaction and only the derived relevant data may be stored. In some embodiments, the derived data and the raw interaction data may be stored. Aspects of presented data in the interactive interfaces, interactions from users, sequence of interactions to achieve an outcome, and other aspects related to interactive interfaces may be saved. Interactions data, along with design data, design data, scenario data, and the like may be used to train one or more AI and/or ML models for identifying user preferences from interactions. The models may be trained on the previous interactions, presented data, and other aspects of the design study relevant to the interaction such as the criteria space, design space, scenario space, and performance space definitions. The trained models may be used to predict which designs should be presented to the user to maximize information obtained from the interactions from the user with the presented designs. The models may be trained to determine user preferences based on the interactions and the final selections. The use of trained models may reduce the number of iterations and amount of interactions that need to be observed to identify preferences and/or identify other designs or regions of interest.
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In embodiments, the interactive graphical interfaces may include a card interface. A In embodiments, a card interface may be used to evaluate or determine aspects the criteria space, design space, scenarios space, and/or performance space.
In embodiments, a card interface may be used to evaluate simulated designs. The card interface may be configured to identify, based on user interactions with the interface, user preferences for designs, preferences for design parameters, optimality of designs, and the like. The card interface may be configured to identify, based on user interactions with the interface, regions or areas of interest in the design space that appear to have desirable designs. These areas may be further explored with further simulations and analysis.
In embodiments, the card interface may include depictions of elements referred herein as “cards” that represent one or more of the simulated trial options. Depictions of cards may include rectangular shapes that may group data or parameters associated with a simulated design. The cards may be depicted as rectangles, squares, circles, polygons, or other shapes. The graphical interface depicting cards may include one or more cards that are associated with different trial designs.
In embodiments, an initial set of cards may be populated on the graphical interface, such as when simulations are completed. In some embodiments, an initial set of cards may be populated on the graphical interface during the simulation before all of the simulations are finished based on available or intermediate data. A card may provide an intuitive grouping of data for a trial design allowing a user to easily determine the parameters and qualities of the trial design the card is associated with.
In many situations, the number of simulated trial designs may be large such as a thousand or even millions of simulated trial designs. In embodiments, the number of cards shown on the graphical interface may be less than the number of simulated trial designs. In some embodiments, the number of cards initially shown on the interface may be less than fifty (50) or may be less than ten (10). The number of cards initially shown may be determined based on the total number of simulated trial designs, a user preference, historical preference, or the like.
A number of cards may be initially shown on the interface. Each card may be associated with and show data related to a particular trial design of the set of simulated trial designs. The selection of the initial trial designs that are represented by the cards may be selected using an initial card selection criteria.
In some embodiments, the initial card selection criteria may be a random criteria wherein random trial designs from the set of simulated trial designs are selected. In some embodiments, the initial card selection criteria may be based on a selection of trial designs that have the best value for one or more parameters. In some cases, each card shown on the interface may represent a trial design that has a maximum value for a different parameter. In embodiments, initial cards shown may represent the trial design that is associated with the trial design that has the best value for each strategic goal. Depending on the parameter, the best value may be the maximum value, a minimum value, a median value, and the like and may depend on the parameter and the goals of the parameter.
In some embodiments, the initial card selection criteria may be based at least in part on historical data (such as associated with a particular user or organization). Trial designs may be selected that have similar parameters to trial designs that were ultimately selected or were finalists in other clinical trials.
In embodiments, the selection of trial designs for cards may be based on a function of one or more parameters and variables. In some embodiments, the selection of trial design candidates for cards may be based on a weighted value sum of one or more parameters and variables. The weighting may be based on a specific goal of the study or other design parameters or requirements. In some cases, two or more different functions may be used. In some cases, each card or some cards may be associated with a different selection function. In embodiments, selection of trial designs for cards may be based on Pareto and/or CH analysis. Pareto designs and/or CH-designs may be used to populate data in the cards.
In embodiments, colors, shading, saturation, background color, and the like may be used to represent information regarding values of the parameters of a trial design shown on each card. In embodiments colors, shading, saturation, background color, and the like may be used to represent the relative value of a parameter with respect to all of the simulated trial designs. For example, a low relative value may be shown with a blue color, while a large relative value may be shown with a red color. In embodiments, colors, shading, saturation, background color, and the like may be used to represent the relative value of a parameter with respect to the values shown on the cards.
In embodiments, the graphical card interface may include designs for specifying filters 3910 for one or more parameters of the trial designs. Filters 3910 may affect which trial designs are displayed by the cards. In embodiments, the filters may affect the number of cards shown. Filters may be used to set global limits on specific parameters for all the displayed cards or may be applied differently to each card.
In embodiments, filters may be applied to cards that are configured to display cards that maximize or minimize a strategic goal. An applied filter may cause the card to display a trial design that provides the maximum or minimum for a strategic goal but also satisfies the bounds of the filter.
In embodiments, filters may be applied via one or more graphical controls. The controls may be different based on the type of parameter or variable the filter is being applied to. Parameters or variables that have real numbers, for example, may have different controls than parameters or variables that have Boolean values. In some embodiments, the filter controls may include sliders, dials, input boxes, and the like. The behavior of a control may depend on the values for the respective parameters or variables in the set of simulated trial designs. The behavior of the control may depend on the distribution of the values of the respective parameter or variable. For example, in the case of a slider control, the behavior of the slider control may be nonlinear with respect to the value the slider represents with respect to the position of the slider. The behavior of the slider may be different when the slider is in a position where there are many values for a variable or a parameter versus where there are no values for a variable or a parameter.
In embodiments, filter settings may be analyzed with respect to the one or more distributions, values, desired values, expected values, goals, trial goals, trial parameters, trial values, distribution of values, distributions or parameters, and the like. Filter settings may be analyzed to determine how adjusting one or more filters may impact what trial designs are displayed on one or more cards. For example, filter settings may be set to filter out all trial designs below a specific value of a parameter of the trial designs. However, the setting of the filter may filter out many trial designs that meet one or more strategic goals. In embodiments, the sensitivity of filter settings may be identified, and their sensitivity may be communicated to a user. In embodiments, a user may be provided with information to indicate that the user may consider adjusting one or more filter settings. The user may be provided with information as to how the settings may be changed. In some embodiments, the platform may adjust filters when the filters are determined to be too aggressive or determined to cause filtering of trial designs that would otherwise be good candidates for a trial or that a user should otherwise review. In some embodiments, the filters may be set to approximate values, and the platform may be configured to automatically set the filters to an actual value based on analysis of the trial designs and/or design objectives.
In some embodiments, filter settings may be analyzed with respect to a distribution of the values related to the filter. Users may be provided with information regarding the setting of the filter with respect to the distribution of the values. For example, in some cases, a variable may have a binomial distribution. The user may be provided with information regarding the setting of the filter and how the setting may be adjusted to consider a cluster or a specific distribution of values. In some cases, filters may be associated with one or more graphs or graphics that identify the distribution of the values associated with the filter. In some cases, a user may be provided with a graph or other indicators that provide information about the relation between a value associated with a filter and one or more strategic goals.
In embodiments graphics on a displayed card, around a displayed card, the like may provide additional information regarding the trial design displayed compared to other simulated trial designs not displayed. Graphics may be used to provide information regarding how many other trial designs are within a specified distance to the displayed trial design. Graphics such as variable shadows, lines, colors, and the like may provide a quick visual indication as to the number of similar trial designs are available to the trial design displayed on the card. In embodiments, graphics may indicate a depth of a deck of cards, the number of trial designs related to a card, the number of trial designs in the same category as a card, and the like.
In embodiments, cards in the card interface may be manipulated by a user. User interactions with the card interface may be tracked. Interactions may include manipulation of cards. Manipulation of cards may include actions that are performed by a user in the process of examining and selecting one or more trial designs. Manipulations may include selecting, ranking, moving, putting into a “shopping cart” or “favorites” category, comparing, and the like. The manipulations of the cards may be tracked by the platform to determine the preferences and/or goals of the user.
In embodiments, the platform may use the history of the interactions, such as the manipulations, to provide suggestions for filter settings and/or provide new cards that show additional trial designs for consideration. For example, the platform may identify a trend that cards with data related to trial designs with a cost exceeding a specific value are removed from consideration by a user. The platform may use the identified trend to determine additional trial designs below the cost and provide the designs for consideration to the user.
In embodiments, data related to objectives of an organization, historical data, customer data, and the like may be used to identify trial designs automatically. In embodiments, the automatically identified trial designs may be displayed to a user with a card for consideration. In embodiments, manipulation of cards may be used to identify preferences such as absolute values or variables or parameters, relative values, and correlations. In embodiments, the platform may find trial designs that are similar to those selected as “favorites” and present them as cards for consideration.
In embodiments, cards that were tagged as a favorite, saved in a shopping cart, or highly ranked by a user may be selected for display in a comparison table. Data related to the trial designs of the cards may be displayed in a table format, and the data may be compared by the user or exported for comparison or other purposes. In embodiments, the interface may include visual effects such as highlighting or emphasized (such as a darker border, a different color of border, a flickering of colors, and the like) to confirm user interactions and/or provide feedback that an interaction was analyzed to determine preferences.
In embodiments, the platform may determine preferences for characteristics of trial designs by presenting various trial designs in the form of cards for considerations. The trial designs may be strategically selected to explore preferences between tradeoffs between one or more parameters. In some embodiments, cards with selected values may be presented to a user allowing the user to select the card or provide other indications of interest in the card. Based on the responses, the platform may determine which variables or parameters are important, as well as acceptable ranges for those variables and parameters. In another embodiment, the platform may simultaneously present two or more cards with contrasting values for parameters allowing the user to choose a favorite card or rate the relative interest in the cards. Based on the rating and selection, the platform may determine which parameters, variables, values, and the like the user is most interested in or that are more important to the trial. Cards presented to the user may reflect values of specific trial designs or may not be selected to explore preferences and may not be directly related to any specific trial design.
In embodiments, the platform may determine preferences for characteristics of trial designs by presenting various combinations of parameters. The platform may show parameter values that represent corner cases of one or more parameters. The platform may show values that represent a spectrum of values of one or more parameters or a combination of parameters to determine a user preference. For example, the platform may display cards to a user that represent different ranges of parameters such as a high cost or low cost. Based on user interactions with the cards, the platform may determine a user's preference for cost. In another example, the platform may determine user preferences for a tradeoff between parameters by presenting cards with two or more parameter values. For example, the user may be presented with one card that represents high cost and low time values. The user may be further presented with another card that represents low cost and high time values. Based on user selection of the cards, the platform may determine the user preferences for tradeoffs between cost and time for a study.
In embodiments, the platform may determine a trial design through one or more processes that may use various graphical interfaces for determining user preferences, user selections, refining results, receiving feedback, and/or the like. In some embodiments, a series of scripts, programs, algorithms, and wizards may analyze data, patterns in the data, user preferences from the data, and/or the like without direct or other use of a graphical user interface. In some embodiments, any combination of data analysis and graphical user interfaces may be used to narrow down a set of trial designs to one or more selected trial designs.
In embodiments, one or more, artificial intelligence algorithms, neural network, statistical analysis, and the like may be used to track user selections, analyze the history of trial design selections to suggest one or more filters and trial designs in view strategic goals, preferences, constraints, and the like.
As shown in
In embodiments, the interactive graphical interfaces may include a tornado diagram interface that may be used to evaluate simulated designs. In embodiments, designs may be evaluated for their sensitivity to changes in scenarios and/or other parameters. A tornado chart is a type of sensitivity analysis that provides a graphical representation of the degree to which the result is sensitive to the specified independent variables. Tornado visualization may be configured for viewing trade-offs and obtain answers to what-if questions in real-time. In embodiments, an interactive tornado diagram for sensitivity analysis of promising designs may use categorization of design parameters, including: decision variable vector, scenario vector, performance criteria, and the like. The tornado diagrams may be configured to help in visually analyzing the effect of change in design and scenario vectors on the performance, and to identify the desirable design space combination to have optimum performance criteria values.
In embodiments, the interactive graphical interfaces may include a heatmap interface that may be used to evaluate simulated designs. A heatmap interface may show a magnitude of a performance parameters for different designs using colors and shading. The heatmap may be arranged in a grid or a matrix. The heatmap may be arranged such that one dimension may list designs while the other dimension may list parameters. In embodiments, the heatmaps may be clustered heatmaps where the parameters may be clustered according to different criteria.
A heatmap provides an interface to quickly visually compare, evaluate, and select designs. In embodiments a heatmap may provide for tens, hundreds, or even thousands of different designs with respect to tens, hundreds, or even thousands of different parameters or scenarios. In embodiments, a heatmap may be configured or configurable to show different relations and allow a user to compare and evaluate different designs against different parameters and/or scenarios. In embodiments, a heatmap may be configured or configurable to show different parameters for the designs. The heatmap elements may be filtered according to one or more filters. In embodiments, the elements may be reordered based on one or more criteria. Users may zoom or select a subsection of a heatmap.
In embodiments, users may evaluate designs by changing views of a heatmap or showing more than one heatmaps with different configurations. In embodiments, users may mark one or more designs in one heatmap or one configuration of a heatmap. The marking of a design in one heatmap or one configuration of a heatmap may be propagated to other heatmaps or configurations of heatmaps with the same design. The selected design may be highlighted or emphasized (such as a darker border, a different color of border, a flickering of colors, and the like) as a heatmap is reconfigured to show the selected design. In embodiments, a two or more designs may be selected and tracked between different heatmaps or heatmap configurations.
In embodiments, heatmaps may provide an option to display or emphasize optimal designs, Pareto designs, CH-designs, and/or other recommended designs. The designs may be highlighted and/or emphasized to show their location in the heatmap and may show animations or other indicators to show changes in locations of the designs in the heatmap when a heatmap is reconfigured. Designs and/or cells that are highlighted or emphasized may be deselected, dismissed, flagged, marked, and the like by the user. Designs that are dismissed may be deemphasized and no longer tracked in the heatmap. User interactions with the heatmap may be tracked to identify user preferences for designs. In some embodiments, a user may identify regions of the heatmap (such as by drawing or indicating an area such as a circle, square, or other shape) to indicate an area of interest or to indicate an area that does not include relevant designs. The areas that are indicated to not have designs may be filtered from the heatmap. Areas that are indicated as areas of interest may trigger additional simulations. For example, marking an area as an area of interest may trigger simulated annealing analysis to identify other designs that may be similar to those in the area of interest. In embodiments, selections of elements in the heatmap may trigger automatic updates to definitions of the criteria space, design space, scenario space, and/or performance space and may trigger additional simulations and/or additional analysis (such as recomputing P-designs, CH-designs, and the like).
In embodiments, heatmaps may provide features to emphasize some designs. In heatmaps with a large number of designs, the color and/or shading that represents a value of a design with respect to a parameter may have a small area on the interface. The small area of the color may make it difficult to distinguish the value represented by the color from nearby or neighboring colors. In some embodiments, the heatmap interface may identify cells that may be of interest to a user (such as representative of a high or desirable value) but may not be clearly visible due to small size or the colors of neighboring cells. In embodiments the cells may be emphasized with changing colors, flickering, distinguished borders, or other effects to distinguish the cell from surrounding cells.
In embodiments, the interactive graphical interfaces may include a tradeoff advisor. A tradeoff advisor may include a graphical interface may provide one or more displays for selecting data for comparison and graphing. The tradeoff advisor may provide a display of heatmaps, scatter plots, tornado plots, and other graphs for visualizing relationships between aspects of the designs. In embodiments, relationships between strategic goals, variables, parameters, values, and the like may be automatically determined for a set of simulated trial options. In some cases, users may choose to select a parameter and/or strategic goal, and the platform may determine two (2) or three (3) or more variables and/or parameters that have the biggest impact on the selected parameter and/or strategic goals. The platform may generate one or more graphs showing the relationship between the parameters. For example, a user may select one output of interest (duration, cost, eNPV, probability of success, etc.). The platform may use sensitivity analysis to automatically put the two (2) or three (3) biggest drivers for that output on the two (2) or three (3) axes for a display chart. In embodiments, a user may select to show parameters or variables that have the biggest impact, lower impact, average impact, variable impact, and the like. The relationships may be used to set filters, rank importance of variables or parameters, and the like.
In embodiments, interactive interfaces (such as the card interface, heatmap interface, tornado interface and the like described herein) may be used to evaluate and configure parameters and/or criteria before simulation. Parameters and values of the parameters for design space, scenario space, criteria space, and/or performance space may be displayed using one or more interactive interfaces. Interactions may be received to configure one or more of the spaces. For example, heatmaps may be used to visualize scenario parameter values that have been determined for simulation. Regions in the heatmap may be identified using the interface to exclude some scenarios. In some cases regions in interest in the heatmaps may be identified to add additional parameters or ranges of values to the spaces.
In embodiments, interactive interfaces may include reporting and alert features. In embodiments, outputs of interfaces may be provided in report format for users. In embodiments, reports may be automatically generated and stored for documentation of design and analysis methodologies. In embodiments reporting may be based on the types and/or number of interactions observed. In some cases reporting may provide a summary of how interactions were interpreted and used to determine preferences and/or recommended designs.
Referring now to
For example,
The primary algorithm 4510 may further include determining, based at least in part on the trial design specification and the one or more component specifications, a configuration for the analysis platform 4614. The configuration may be a data file and/or other type of data structure that defines various aspects of the platform 104, e.g., sequencing and/or type of algorithms, location of inputs, and/or any other type of configurable property of the platform 104 described herein. For example, in embodiments, the configuration may call for filtering simulated trial designs by first applying a Pareto algorithm followed by applying a convex hull algorithm. The configuration may then call for the results of the convex hull algorithm to be assessed via simulated annealing to detect if the current results are a local maxima or minima with respect to the desired performance criteria. In embodiments, the primary algorithm 4510 may include executing an analysis of the clinical trial design 4616 via the analysis platform 104, as described herein, using the configuration. As further shown in
In one example, the primary algorithm may determine a configuration of the analysis platform based in part on the number of designs that are expected to be simulated for a study. The primary algorithm, may, before simulations are executed, analyze the configuration for simulation to determine or estimate the number of designs for which performance parameters will be determined. The number of designs may be estimated based on the number of design/scenario parameters (the number of parameters may correlate to the number of designs that will be simulated), based on the types of simulations scheduled (exhaustive simulations, partial simulations, or based on simulated annealing). The primary algorithm may determine which analysis algorithms should be executed to provide the user with sufficient (not too many) recommended designs. In one instance, if exhaustive simulations are scheduled, the primary algorithm may configure the analysis platform for the convex hull algorithms to reduce the number of design suggestion. In another instance, if partial simulations are scheduled, the primary algorithm may configure the analysis platform for Pareto algorithms in order to provide for a sufficient number of recommended designs.
Turning to
In certain aspects, the apparatus 4700 may provide for results and/or intermediate data of the analysis of one or more clinical trials to be transmitted and/or accessed by a user interface (which may be provided by the graphical user interface circuit 4726) for review, analysis, visualization, and manipulation. The user interface may receive user input data 4732 for design selections, parameters, and/or the like. The apparatus 4700 may provide an interface (which may be provided by the graphical user interface circuit 4726) for interacting with external tools and/or engines for simulation and/or analysis. In some embodiments, the apparatus 4700 may record and/or track the processes and/or inputs for a session and/or design study. The apparatus 4700 may track the sequence of steps and/or algorithms/engines used for the analysis of data and may further record and/or track user selections and/or actions. The apparatus 4700 may analyze recorded sequences of processes, user actions, and/or selections to learn from past actions and results to determine the most appropriate (i.e., the fastest, the most accurate, etc.) sequence of algorithms for providing user recommendations. In embodiments, the apparatus may learn via artificial intelligence, e.g., a neural network, as disclosed herein. In embodiments, the primary algorithm 4510 may facilitate communication between any two or more of the algorithms described herein. For example, the platform may track and record which platform configurations resulted in a faster design consensus. The platform may track which platform configuration and which combination of analysis configuration resulted in less time between when designs were presented/recommended to a user and when a final design was selected. Faster time for selection may be indicative that the platform provided the user with recommended designs that were acceptable since the user spent less time considering other options or performing additional simulations and/or analysis. The system configuration that was related to faster consensus may be tagged as more favorable. Based on the tags, the platform may analyze a configuration of simulation configurations and analysis configurations.
In embodiments, analysis of design options may include a Pareto analysis. A Pareto optimal analysis may be used for algorithmic generation of design recommendations. Pareto analysis may be used to determine one or more Pareto optimal designs (also referred herein as “Pareto designs” or “P-designs”). Initial selections of a set of candidates for best or optimal designs may be selected using a Pareto frontier that is generated by the Pareto designs.
Pareto analysis may identify designs that are Pareto optimal for the one or more performance parameters. Pareto optimal designs may be designs where no individual performance parameter can be better off without making at least one other individual performance parameter worse off. The set of Pareto optimal designs may form a Pareto frontier. Pareto optimality may be used as an optimality criteria.
Referring again to
The Pareto frontier may be computed for a subset of all the trial designs. In some cases, the Pareto frontier may be computed for trial designs that have at least a threshold value for one or more performance parameters. In the example of
In embodiments, the Pareto designs (and, hence, the Pareto frontier) may be determined using various methods such as, but not limited to, a scalarization algorithm, a skyline query, weighted sums, and/or the like.
In embodiments, Pareto designs may be identified as globally optimum designs and the Pareto designs may be recommended to a user. In some embodiments, Pareto designs may be identified as initial globally optimum designs and they may be used to refine the optimality criteria to identify other globally optimum designs for the new criteria. In some embodiments, interactive methods can be used in which a person, or an alternate algorithm, acts as a decision-maker and interacts with the method to indicate a preference for designs (such as preference among initial Pareto designs). In such embodiments, the method may use the preference information to determine other trial designs (and modify optimality criteria) based on the preference of designs. In embodiments, the Pareto designs can be used to elicit the user's preferences by interactively querying the user to make comparisons between designs.
Trial designs that are on or near the Pareto frontier may be selected as initial choices for evaluation by a user. One or more of the designs may be presented to a user to evaluate and provide feedback. Feedback may include data related to acceptance of a trial design, rejection of a trial design, identification of one or more parameters or features of a trial design, and/or the like. In embodiments, the one or more trial designs from the Pareto frontier may be presented to a user using cards, tornado diagrams, heatmaps, and/or other similar interfaces as described herein.
In some cases, the platform may receive feedback, e.g., user feedback, regarding recommended Pareto designs. Based on the feedback, optimality criteria may be changed. Changes in optimality criteria may include eliminating designs from consideration. When designs are eliminated from considerations, a Pareto analysis may be performed on the remaining designs which may result in new Pareto designs. In some cases, a change in optimality criteria may include a new and/or modified criteria that provides for a “second best” Pareto frontier to be computed. A “second best” Pareto frontier may include designs that are Pareto optimal when the initial Pareto designs are eliminated. The second best Pareto designs may represent a second “level” of a Pareto frontier. In some cases, multiple “levels” of Pareto frontiers may be computed. In some cases, recommendations to users may include designs from the second best Pareto frontier and/or other levels, e.g., “third best”, “fourth best”, etc. Recommendations to designs in other levels may identify other design types that may be preferable. Recommendations to designs in other levels may identify design that are more robust than designs in the first level and may be more desirable due to their robustness even if they have worse performance with respect to other performance parameters. In embodiments, interfaces such as tornado diagrams, card interfaces, heatmaps, and the like (including as described herein) may be used to evaluate initial recommendations determined using initial optimality criteria. Received feedback regarding the designs may be used to refine recommendations and optimality criteria used to determine globally optimum designs.
In embodiments, the optimality criteria may be modified according to the number of Pareto designs that are identified. Pareto designs may sometimes cluster. Some Pareto designs may be very close to other Pareto designs. Differences in the designs may be small and/or within the expected simulation error of the designs. In some cases, the Pareto designs which are close together may be filtered or grouped together. In some cases, a first Pareto design may be used to temporarily represent one or more other Pareto designs that are close to the first Pareto design to reduce the number of Pareto designs that are considered.
Pareto analysis may be configured to separate Pareto designs that are twins (designs that have equal or nearly equal performance parameters or observables such as cost, power, and/or time, twins may be designs that are within simulation error for example) and/or siblings (designs that are similar with respect to performance parameters or observables). In some cases, similarity for twin and/or sibling determination may be based on thresholds, such as designs that are within an ε-box of each other. In embodiments, one or more first designs may be considered within an ε-box of a second design when the one or more first designs are within a ball of radius ε from the second design. Designs that are twins or siblings may be flagged or marked for further analysis if they are deemed to have desired performance as the twins or siblings may represent different design options that can be used to achieve similar performance criteria.
In embodiments, the Pareto analysis may further identify dominated designs. Dominated designs may be designs that are dominated by one or more other Pareto designs. Dominating Pareto designs may be better for one or more of the dominated designs for one or more design criteria. From the dominated designs, Pareto analysis may identify designs that are clustered by the dominating Pareto designs. The designs that are clustered may be identified using ε-criteria. The ε-criteria may be a threshold as to how far the dominated designs may be from the dominating Pareto designs to be included in the set of clustered designs. The ε-criteria may be a measure as to how similar designs should be to be clustered together. The threshold and similarity measures may be directed to the performance parameters of each design, such as the cost, duration, etc., of each design. For example, for performance parameter p, a design may be within ε-criteria if a design is within p±ε.
Pareto designs may be filtered or grouped, and one or more other Pareto designs that are within ε of another Pareto design may be represented by one Pareto design. In other words, a dominating Pareto design may represent one or more dominated Pareto designs. In one example, the set of Pareto designs may be filtered to a smaller set of ε-filtered designs. The size of the set of ε-filtered designs may be adjusted, e.g., made larger or smaller, by selecting the value of ε. In some cases, ε may be selected to be about 0.001, and/or about 0.055, and/or about 0.15. The ε-filtered designs may remove designs that are within ε-distance of another design. In some cases, the ε may be selected such that the number of ε-filtered designs is less than a predetermined and/or desired number such as one hundred (100), ten (10), or less than ten (<10). The ε-filtering may be performed with respect to performance parameters, design parameters, scenario parameters, and the like. In embodiments, ε-filtering may reduce the number of designs recommended to a user, and may increase the range or variety of designs that are recommended to a user by eliminating designs that are close to one another. In embodiments, ε-filtering may reduce clutter on a user interface and/or the number of computations performed.
In some embodiments, ε-filtered designs may be recommended and/or evaluated by a user to determine if the set includes designs with design criteria that are desirable. When a design from the ε-filtered designs is selected, the Pareto designs that were ε-filtered may be provided to the user for further evaluation. The ε-filtered designs may have similar design criteria to the selected design but may relate to different types of designs. The user may evaluate different design types and design options that are within ε of the desired/selected design criteria.
Pareto analysis often requires new configurations and considerations when applied to clinical trial design optimization. In one aspect, clinical trial simulation (CTS) data is usually different from data in other applications. For example, in many other applications, points in criterion space are continuous or form a lattice while, in the current application, points correspond to discrete designs. In many other applications, there may be a very large number of points on the Pareto frontier and the focus may be to produce a handful of well spread out points on the Pareto frontier for a decision-maker to study closely to determine and/or select the best solution. CTS data, on the other hand, is typically highly clustered in certain regions of criterion space with substantial parts of the space being empty due to practical limits and constraints, e.g., continuous adaptation after each subject) and/or due to there being a handful of design types for a particular trial (fixed SS, SSR, Group Sequential, tailored innovative designs and the like).
Pareto analysis for the clinical trial optimization applications may be designed to cluster dominated designs into Pareto clusters and provide an input consisting of only Pareto designs to convex hull algorithms in preparation for creating convex hull clusters with a simple geometrical structure in the criterion space. Additional unique aspects, of some embodiments, include a focus on interactive clinical trial simulations linked with visualizations of performance criteria space, design factors space, and/or scenarios. Links between Pareto designs and close but dominated designs may be generated as a byproduct of finding the Pareto set. Dominated designs may be preferred for qualitative reasons (e.g., complexity in trial execution, sensitivity to extreme downside scenarios). Pareto points that are close to other points may be automatically suppressed in a corresponding visualization (e.g., because they are unimportant due to being in the area within the margin of model error). Dominated designs can be unmasked when needed (e.g., when the designs are qualitatively different). Hierarchical level two (2), level three (3), etc. Pareto sets may be generated by rerunning the analysis. In embodiments, the analysis may accommodate constraints on design parameters, and dynamically updating the Pareto set by removing designs, adding new designs and scenarios, and/or changing prior probabilities of scenarios. In embodiments, the analysis may be applied in stages to first find Pareto points in clusters of similar design sets (e.g., changes of one parameter change, qualitatively different). In embodiments, the analysis may be useful for gaining insight into design improvements. In embodiments, clustering points in design space distances are natural and may be efficient for users to gain insights. In embodiments, the analysis may be integrated with a simulated annealing engine that uses weights and/or target criteria points in unexplored regions.
Pareto analysis may provide for organization and/or analysis of data that is comprehensible and/or provides for a focus to designs that are optimal or near-optimal. The Pareto analysis may determine the hierarchies of design sets for consideration. In embodiments, one set in the hierarchy may be ε-filtered Pareto designs, another may be all Pareto designs, and/or another hierarchy may be designs that are within ε of the Pareto designs. The design space may be explored using the hierarchies to find designs that have the desired criteria and further to find designs that achieve the desired criteria with desired or acceptable design types.
In embodiments, Pareto analysis may be a two-pass analysis. In the first pass, the simulation records (e.g., summary records) may be sorted by maximum and/or minimum values of the performance parameters. Various sorting algorithms (including those described herein) may be used. In the second pass, after the records are sorted, each record may be compared with all the records that follow in the ordered set to identify which records are ε-dominated by the record. After the second pass, the algorithm may provide a set of Pareto designs which are not ε-dominated by any other design and/or Pareto clusters of dominated designs linked to one-or-more Pareto designs. If ε=0 for all performance criteria, then the full set of Pareto designs may be produced. If ε>0 for some performance criteria, then the set of ε-filtered Pareto designs may be produced, which is a subset of the full set of Pareto designs since some of the Pareto designs from the full set may be ε-dominated by other Pareto designs.
In embodiments, the ε-filtered Pareto designs may be used for initial recommendations and/or consideration for users. The designs dominated by each ε-filtered design may be further recommended or provided for consideration when a design from the ε-filtered set if selected for further analysis by a user.
In embodiments, the Pareto analysis may be configured to quickly update the identified Pareto designs when new designs are introduced as inputs to the algorithm. The set of identified Pareto designs may be augmented incrementally by the algorithm as new designs are identified/simulated and added to the design space.
The apparatus of
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In embodiments Pareto analysis includes consideration of performance, design, scenario, and criteria spaces. Pareto optimality is determined with respect to performance parameters of the performance space. The performance parameters may be evaluated using simulation for different designs defined by the design space. Each design in the design space is evaluated for different scenarios of the scenario space. The performance, design, and scenario spaces are defined according to the criteria space definitions.
In embodiments, analysis of design options may include convex hull (CH) analysis. A convex hull analysis may be used for algorithmic generation of design recommendations. Convex hull analysis may be used to determine one or more designs that are on a convex hull (also referred herein as convex hull designs or CH-designs). Initial selections of a set of candidates for best or optimal designs may be selected using a convex hull that is generated with convex hull analysis. Convex hull analysis may determine the smallest convex polygon shape that contains the designs.
Referring again to
In embodiments, convex-hull designs are a subset of Pareto designs. They are often a fraction of the size of the set of Pareto designs. An important property of convex-hull designs is that they are that can be optimal with respect to a performance criteria that is a linear weighted criterion of the components of the multivariate performance parameters.
The convex hull of design may be computed for a subset of all the trial designs. In some cases, the convex hull may be computed for trial designs that have at least a threshold value for one or more performance parameters.
In embodiments, various algorithms/engines may be used to compute convex hull points and may include brute force, gift wrapping, Graham scan, Jarvis, QuickHull, Qhull algorithms/engines, and/or the like. Computation of the convex hull of the designs may include additional data such as facet area and volume of the hull, facet normal vectors (weights for which the facet is optimal). Additional outputs may include triangular facets (such as Delaunay) or polygon (polyhedral) facets. In embodiments, outputs related to the facet area may be indicative of the number of designs from the CH-designs that are in the design space. Large facet areas may indicate that there are few design options in the design space area of the facet. Facet area information may be used as a basis for the exploration of the design space using simulated annealing algorithms/engines and/or the like.
In embodiments, CH-designs may be identified as desirable or optimum designs and the CH-designs may be recommended to a user. In some embodiments, CH-designs may be identified as initial globally optimum designs and they may be used to refine the optimality criteria to identify other globally optimum designs for the new criteria. In some embodiments, interactive methods can be used in which a person or an alternate algorithm acts as a decision-maker and interacts with the method to indicate a preference for designs (such as preference among initial CH-designs), and the method may use the preference information to determine other trial designs (and modify optimality criteria) based on the preference of designs. In embodiments, the CH-designs can be used to elicit the user's preferences by interactively querying the user to make comparisons between designs.
Trial designs that are on or near the convex hull may be selected as initial choices for evaluation by a user. One or more of the designs may be presented to a user to evaluate and provide feedback. Feedback may include data related to acceptance of the trial design, rejection of the trial design, identification of one or more parameters or features of the trial design, and the like. In an embodiment, the one or more trial designs from the convex hull may be presented to a user using the card, tornado, heatmaps, and similar interfaces described herein.
Convex hull analysis may output two or more sets of designs and may include the convex hull designs and clustered convex hull designs (such as designs that are non-reachable by weighting criteria). The sets of designs determined by convex hull analysis may represent a hierarchy of designs for recommendation and/or consideration by a user. The convex hull designs may be the first in the hierarchy and may be the first designs to be recommended or provided for consideration. The clustered convex hull designs may be below the convex hull designs on the hierarchy of designs for recommendation and/or consideration. The clustered convex hull designs may be provided for recommendation and/or consideration after the set of convex hull designs or if no designs in the set of convex hull designs are acceptable to a user. In some cases, the set of clustered convex hull designs may be larger than the set of convex hull designs.
Convex hull analysis may be configured to separate CH-designs that are have equal or nearly equal performance parameters or observables such as cost, power, and/or duration. In embodiments, designs that are within an ε-box of a design may be designs that are within a ball of radius ε from a design. Designs that are twins or siblings may be flagged or marked for further analysis if they are deemed to have desired performance as the twins or siblings may represent different design options that can be used to achieve similar performance criteria.
CH-designs may be grouped, and one or more other designs that are within ε of a CH-design design may be represented by one CH-design. The size of the set of ε-filtered designs may be larger or smaller by selecting the value for E. In some cases, ε may be selected to be 0.001, and/or 0.055, and/or 0.15.
Convex hull analysis for the clinical trial optimization applications may be designed to cluster dominated designs into convex hull clusters (CH-clusters). In embodiments, the analysis may accommodate constraints on design parameters, and dynamically updating the CH-design by removing designs, adding new designs and scenarios, and/or changing prior probabilities of scenarios.
Convex hull analysis may provide for organization and/or analysis of data that is comprehensible and/or provides for a focus to designs that are optimal or near-optimal. The convex hull analysis may determine the hierarchies of design sets for consideration. In embodiments, one set in the hierarchy may be CH-design, another may be clustered CH-designs. In some embodiments, on CH-design hierarchy level may be the initial CH-designs. The next hierarchy level may be CH-designs that are determined when the initial CH-designs are not deleted and so on. Platform may drill down into the hierarchies when initial levels do not provide acceptable designs.
In embodiments, inputs to convex hull analysis may include simulated trial designs. In some embodiments, inputs may be P-designs determined by the Pareto algorithm/engine. In some embodiments, the inputs may be a set of trial design simulation records from a simulation database. Inputs may further include levels of minimum meaningful difference for performance parameters (ε1, ε2, ε3, . . . ) specified by users or default values that are fixed or dynamic (data dependent). The values for (ε1, ε2, ε3, . . . ) may depend on the stage of design exploration (e.g., larger values in early stages and smaller values in later stages, when more accurate information has been obtained), user perspective/choice, and/or the like. In some cases, inputs may include upper and lower bounds for each performance parameter value.
In embodiments, outputs of convex hull analysis may include facet area, volume of the hull, facet normal vectors (weights for which the facet is optimal). In embodiments, facet area, volumes of the hull, and normal vectors may be used by search algorithms such as simulated annealing to determine search trajectories and parameters. In embodiments convex hull analysis may be parallelized. Input designs may be partitioned into two or more sets and a CH-designs may be determined for each set in parallel. The CH-designs of each set may be combined and overall CH-designs may be determined. In some embodiments, convex hull analysis may support batch updating in collaborative environments.
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In embodiments convex hull analysis includes consideration of performance, design, scenario, and criteria spaces. Convex hull may be determined with respect to performance parameters of the performance space. The performance parameters may be evaluated using simulation for different designs defined by the design space. Each design in the design space is evaluated for different scenarios of the scenario space. The performance, design, and scenario spaces are defined according to the criteria space definitions.
In embodiments, the platform 104 may be configured to explore different scenarios and perform “what if” analysis. The platform may be configured to automatically or semi-automatically explore the robustness of different designs. Trial designs may be evaluated, for example, respective to a range of treatment effects. As depicted in
In embodiments, the platform may further provide additional sensitivity analysis for designs. Models and designs may include assumptions about behaviors, parameters, and the like of a study. Sensitivity analysis may be used to determine behavior or trial designs in view of perturbations and variations in the model assumptions and/or parameters. Sensitivity analysis may be used to determine the robustness of designs. In some embodiments, the robustness of designs provides for a measure of what variations of assumptions a design can tolerate and still provide a useful result.
In embodiments, designs may be scored or evaluated based on multiple criteria. In some cases, a series of different tests that evaluate a sensitivity, robustness, and/or risk associated with a design may be computed. In some cases, an overall composite score that takes into account the multiple tests that can be computed.
In embodiments robustness and/or sensitivity of a design and/or design parameters may be determined by determining design and scenario performance parameters as depicted in
In some embodiments, a Pareto analysis may provide for a measure of robustness for designs. In embodiments, the Pareto analysis may be used to determine Pareto optimal designs. As described herein, Pareto optimal designs may define the Pareto frontier. In embodiments, robustness of Pareto designs may be determined based on the separation between Pareto designs.
In embodiments, robustness and/or sensitivity may be defined with respect to types of scenarios. In embodiments, scenarios may be categorized based on properties of the scenarios such as their probabilities. In one example, scenarios may be categorized into four (4) types of scenarios: Optimistic, Base, Pessimistic, Very pessimistic. In embodiments, a performance score for a design or design parameters may be determined for each scenario. The scores for each scenario may be used to determine a composite score for each type of scenario (by computing an average for example). A composite score may provide a measure of robustness. The score may provide a measure of a performance for a design for scenarios that are likely to happen, unlikely to happen, and the like. Robustness may be determined based on the number of scenario categories for which a design exhibits acceptable performance. For example, designs that have acceptable performance for scenarios that are only likely to happen may not be considered robust, while designs that have acceptable performance for scenarios that likely to happen and unlikely to happen may be considered robust.
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In some embodiments, one or more optimization algorithms may be used to explore the global design space or a localized subspace of possible designs. Simulated annealing algorithms may be used to explore a subspace of possible designs. In some embodiments, simulated annealing may be used to explore the design space around an initial selected trial design to determine if there are any additional design options near the selected design that provide an improvement to one or more criteria or parameters. Simulated annealing may reduce the number of designs that are simulated while providing high confidence that optimum or near optimum designs are determined.
In embodiments, design simulations may be non-exhaustive and the platform may simulate a partial set of possible design options. When a partial set of possible design options for a design criteria is simulated best/optimal designs may be missed. When only partial set of design options has been simulated, designs of interest (such as designs with the best and/or optimal performance for the set of simulated designs) may be identified (such as by a user or by other components of the platform), simulated annealing may be used to search for additional designs that may have similar or better performance than the designs of interest. In embodiments, when only a partial set of design options has been simulated, regions of interest (such as regions of the performance space that are identified as having designs of interest) may be identified (such as by a user or by other components of the platform), simulated annealing may be used to search for additional designs that may have similar or better performance than the designs of interest.
Simulating annealing of trial designs may involve an initial starting design and iterations that consider neighboring design options. Adaptive logic may be used to move the system between different neighboring design options. Adaptive logic may control which parameters of the design options are modified, how much they are modified, conditions for taking different paths, conditions for retreating towards the initial design, conditions for cooling schedules, and the like. Adaptive logic may predict which parameter modification may results in an improvement in performance compared to the initial design. In embodiments, predictions may be based on historical data. Previous simulation data may be used to generate ML and/or AI models to predict the effects of changes of design on performance. For each modification from the initial design, the design modification may be simulated to determine the performance of the design to determine if the modification resulted in an improved design option. Changes in performance may be used by the control logic to determine the path of exploration and other parameters of simulated annealing.
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In embodiments, simulated annealing may be used in a workflow where initial design simulations are selected to provide a coarse representation/overview of the performance space of the design options. The coarse representation may be used to identify designs or regions of the performance space, scenario space, and/or design space of interest. The designs or regions of interest may be used as initial starting points for simulated annealing to search for designs near the identified designs or in the regions of interest that have improved performance compared to the initial designs. In some embodiments, initial coarse design simulation may represent 50% or 30% or less of the total design options for a criteria. The use of coarse initial design simulation may reduce initial simulation time and resources. In embodiments, the designs of interest or the regions of interest from the initial simulations may be determined by a user via user interface. In embodiments, the designs of interest or the regions of interest from the initial simulations may be determined by other elements of the system. For example, designs of interest that can be identified using Pareto analysis, convex hull analysis, and the like. Simulated annealing may be used to fill in gaps between initial simulated designs.
In embodiments, simulated annealing analysis may be configured to fill gaps in a convex hull within a CHP cluster. Simulated annealing may be configured to reduce simulation runs required by the Cartesian product approach. Simulation may start with a coarse cartesian grid (or replications of trials of random samples of designs randomly, possibly stratified) as input and incrementally develop P-designs and CH-designs that are identical or close to the P-designs and CH-designs of the full Cartesian sample using simulated annealing.
Simulated annealing may be configured to find designs that are optimal for given weights or a design that is nearest in performance to specified desired criteria. In some embodiments, the simulated annealing may use a weighted sum of squares or of absolute differences as the distance from the desired point to iterate to a design if there is a feasible design in a specified elliptical or box neighborhood around the point. The simulated annealing may be configured to use starting points that are designs closest to designs that are in the criteria space. In embodiments, the simulated annealing algorithm/engine may explore the design space around a criteria by exploring the effects of altering parameters of a design. Simulated annealing may be configured to explore all the parameters of a design or preferentially manipulate or explore a subset of the parameters. In some embodiments, users may specify preferences with respect to which parameters to prioritize for the exploration using simulated annealing. In some cases, the user may specify which directions the simulated annealing should explore the design space. The constraints may be based on which areas of the design space already have many designs, for example. In embodiments, historical data related to simulated annealing search may be used to prioritize one or more design parameters for the search using the algorithm.
In embodiments, inputs to simulated annealing may include a weight vector for criteria, an objective function specification (e.g., normal vector for CHFs), design variable ranges (discretized) numeric or categorical, design simulation engines (with control of a number of simulations and in future feedback of intermediate results as engine decreases replications at inferior designs to exploit simulation efficiency), engines for design simulations or other engines equipped with interfacing wrappers, set of starting designs from which simulated annealing will iteratively attempt to improve using probabilistic search. Inputs may further include cooling schedules with defaults, constraints on design variables (e.g., upper and lower bounds, rules of inadmissible combinations and the like). In embodiments, outputs may include parameters and criteria values for best design found, best design for each start, visualization of paths, cooling schedules, visualization through parallel designs interface, and the like. The output of the simulated annealing analysis may be used to update the set of CH designs and P-designs. The simulated annealing analysis may be configured and/or modified using one or more interactive interfaces (such as from feedback from card interface, heatmap interface, tornado diagram interface).
In some embodiments, a simulated annealing algorithm/engine may be configured for multicriteria objectives where no weights for performance criteria are specified and the algorithm/ending may search for Pareto points directly. In some embodiments, the simulated annealing algorithm/engine may start a search with P-designs and/or siblings of P-designs. In embodiments, the simulated annealing algorithm/engine may be parallelized. Parallelization may be configured based on convex hull facets and/or different data sets which can be computed in parallel. In embodiments, the simulated annealing algorithm/engine may include bounds and/or improvement cut-off criteria in the search. In embodiments, the simulated annealing algorithm/engine may use a flexible grid structure and may use different step sizes when exploring the design space. In embodiments, the step/grid size may be initially coarse (relatively large steps) and set to finer logic (relatively smaller steps) as the design space is explored. In embodiments, search algorithms/engines may include genetic and/or integer programming algorithms/engines. In some embodiments, smart Monte Carlo methods (including as described herein) may be further used to reduce the number of simulated designs.
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In embodiments simulated annealing includes consideration and analysis of performance, design, scenario, and criteria spaces. Simulated annealing analysis searches for designs that show improvements in the performance space. Searching comprises generating variation in the design parameters (design space) and scenarios (scenario space) parameters of an initial design. The performance, design, and scenario spaces are defined according to the criteria space definitions.
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Accordingly, the time required to perform simulated annealing may be decreased by testing variations of a clinical trial design without having to simulate the variations by locating the variations on the surface. Interpolation may be computed using the barycentric coordinates of a point within its enclosing simplex. The surface may be used to generate visualizations of the weighted criteria functions over the design space. The visualizations may include a weighted criteria surface generated via the weighted sum of the individual criteria surfaces, which may provide for rapid estimation of the design value for a large set of criteria weights. Embodiments may use linear programming or network formulation as the “simplex finder” for a given design point. The surface may also be used to determine most promising and least promising directions or parameter variations in simulated annealing therefore reducing the number of simulations. Use of the criterion surface may provide for the early detection that a clinical trial design is not likely to be a Pareto design and, therefore, simulation of the clinical trial design may be skipped.
In particular, embodiments of the current disclosure may use a simulated annealing engine to leverage the criteria values from past clinical trial designs that have been simulated for a scenario vector to estimate design performance under an adjacent scenario. As such, some embodiments may take advantage of the fact that: 1) the edges in a Delaunay triangulation contain all shortest paths between any two design points; and/or 2) minimum spanning trees of all subsets of the design points are subgraphs of the Delaunay triangulation.
For example, consider a set of clinical trial designs that have been simulated and have known performance parameter values. The clinical trial designs may be treated as a scatter of points in the K dimensional design space of design vectors (e.g., K=5). Each clinical trial design may be associated with its performance parameter vector of dimension J (e.g., J=3). A Delaunay triangulation of these clinical trial design vectors may be constructed, wherein the surface of any criterion at any point is the interpolation of the criterion values of the K Delaunay simplex vertices containing the point. The interpolation may be computed using the barycentric coordinates of the point within its enclosing simplex. The weighted criteria surface is then the weighted sum of the individual criteria surfaces. As will be appreciated, this approach may provide for rapid estimation of a design's values for a large set of performance parameter weights. As will be further appreciated, Delaunay triangulation also has the advantage of creating simplexes that are not “long and skinny” so that vertices are “reasonably” close to any interior point. This is particularly true where, as in some embodiments of the present disclosure, the design points belong to a rectangular grid. Embodiments of the present disclosure may utilize linear programming or network formulation as the “simplex finder” for a given design point. A cache of recent simplexes since, apart from visualization may then be used to quickly approximate the criterion value.
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The trial simulation database 7112 may form part of the data facilities 138 and be a large repository of previous, current, and/or selected clinical trial design simulations. The trial simulation database 7112 may include simulations, as described herein, merged from different databases, groups, users, and the like. The trial simulation database 7112 may include data related to each simulation, such as engines used to run the simulation, date, time, and/or the like. In embodiments, the trial simulation database 7112 may include input data such as: id number, version, scenario id, design id, user id associated with a clinical trial design, the running status, number of interim analyses, time units, performance of events observed, treatment arm information, treatment control name, and/or the like. In embodiments, the trial simulation database 7112 may include output data such as accrual duration, average power, events data, net present value, insufficient count data, follow-up time data, expected net present value, probability of efficiency, probability of favorability, probability of futility, probability of success, study cost, study duration, time required, discounted study cost, total sales, a score, a total score, and/or the like. The inputs and/or outputs may be organized in a hierarchy that includes labels and/or other identifiers that label the items as pertaining to scenarios, clinical trial designs, primary criteria, secondary criteria, stimulation control, and the like. The trial simulation database 7112 may include temporal data for each simulation and may include data related to the beginning phase of a clinical trial design, the middle of a clinical trial design, progress data of virtual patients, and/or the like. In some cases, the trial simulation database 7112 may include raw simulation data from each simulation run. In some cases, the simulation database 7112 may include summary records associated with each clinical trial design simulation and include averages, endpoints, overall statistics, and/or the like. The trial simulation database 7112 may include data that relates each clinical trial simulation to the design space, scenario space, criteria space, and/or performance space, as described herein.
The recommendation database 7110 may include a subset of the trial simulation database 7112 that has been analyzed or flagged to be applicable to design criteria.
The recommendation engine 7114 may include and/or interact with one or more components and/or algorithms/engines, e.g., a Pareto engine 7118, a convex hull engine 7120 and/or any other engines/components described herein, for simulation, global optimization, visualization, analysis of clinical trial designs, control, and/or the like. For example, the recommendation engine 7114 may interact with, e.g., exchange data with and/or invoke procedure calls to, the simulation facility 110 (
In embodiments, the Pareto algorithm/engine 7118 and/or the convex hull algorithm/engine 7120 may be run or executed sequentially such that the output of the Pareto algorithm/engine 7118 may be an input to the convex hull algorithm/engine 7120. In this scenario, the Pareto engine 7118 may be used to first identify Pareto designs (also referred to herein as “P-designs”) from the design space (which may be a subset of the design space), and the convex hull algorithm 7120 may further separate the P-designs and identify convex hull designs (also referred to herein as “CH-designs”), which may be a subset of the P-designs. In embodiments, the convex hull engine 7120 may be the first executed engine and may identify a set of CH-designs from the design space, wherein the Pareto engine 7118 may be used to further identify P-designs from the set of CH-designs. In embodiments, the convex hull engine 7120 may be configured to quickly update the identified CH-designs when new designs are introduced as inputs to the convex hull engine 7120. The set of identified CH-designs may be augmented incrementally by the Pareto engine 7118 as new designs are identified/simulated and added to the design space.
In embodiments, the Pareto engine 7118 may be executed without the convex hull engine 7120, wherein the outputs of the Pareto algorithm/engine 7118 may be used for design recommendations. In some embodiments, the convex hull engine 7120 may be executed without executing the Pareto engine 7118, wherein the outputs of the convex hull engine 7120 may be used for design recommendations.
In embodiments, the recommendation engine 7114 may be configured to provide a user with a limited number of recommended designs. The recommendation engine 7114 may provide recommendations that are a subset of the P-designs or the CH-designs. In some cases, the recommendation engine 7114 may be configured to limit the number of designs recommended to between about five (5) and about nine (9) designs. Recommended designs may be presented in small sets (such as between about five (5) and about nine (9) designs), allowing a user to compare the designs in the set. The set of recommended designs may be interactively augmented or updated based on user input or feedback. For example, the recommendation algorithm 7114 may present a set of initial recommended designs and ask a user to select a favorite design. Based on the favorite design, the recommendation engine 7114 may augment a next set of recommended designs. For example, based on the selection of one design, the engine 7114 may further present siblings of the selected design and/or designs that are dominated by the design.
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Inputs 7418 to the recommendation engine 7114 may include the clinical trial design results 7212, wherein the engine 7114 generates the Pareto 7214 and convex hull 7218 designs via the corresponding engines 7118 and 7120. In some embodiments, however, the Pareto designs 7214 and/or the convex hull designs 7218 may be fed to the engine 7114 as inputs 7418. The inputs 7418 may also include any other type of output from the Pareto 7118 and/or convex hull 7110 engines (facets, normal, etc.). In embodiments, the inputs 7418 to the recommendation engine 7114 may also include the set or a subset of all the designs simulated 7212 in addition to the P-designs 7214 and/or CH-designs 7218. Inputs 7418 may also include user settings 7420 and/or parameters 7422, such as the number of recommendations the recommendation engine 7114 should provide. The recommendation engine 7114 may receive user selections and other inputs 7418 that may provide guidance to the engine 7114 as to which designs are preferred by the user or which other designs the user wants to explore.
In embodiments, the algorithm/engine 7114 may generate or output visualizations and/or interfaces (collectively shown as 7424) to compare two or more recommended designs 7210. Non-limiting examples of the visualizations 7424 are depicted in
The recommendation engine 7114 may also output lists or sets of designs, referred to herein as “related designs” 7426 (
In embodiments, design siblings 7428, and/or other different clinical trial designs that have similar performance criteria, may have different complexity. In some embodiments, types of clinical trial designs may be arranged and/or marked according to the complexity, ratings, historical preference, and/or the like. In some cases, clinical trial designs may be arranged in a hierarchy according to a preference such that, for example, designs that have lower complexity for a performance criteria are provided first. For example, in a case where multiple clinical trial designs have the same or nearly the same performance criteria, the multiple clinical trial designs may be ordered based on the properties of the designs when providing recommendations.
In embodiments, the recommendation algorithm/engine 7114 may include logic to reduce the set of CH-designs 7218 by a user-specified number by dropping CH-designs within the set 7218 with the objective of minimizing the maximum reduction of criteria values over the weight space. The recommendation engine 7114 may include logic to expand the CH-design set 7218 by choosing subsets of Pareto designs 7214 that are closest to the convex hull facet of the CHF cluster (facets may be Delaunay triangulations as described herein). The recommendation engine 7114 may include logic to fill gaps between recommended designs 7210. For example, Pareto designs 7214 in CHF clusters may be selected to fill large gaps (e.g., large facets and/or distances from a recommended design and a target point on the facet according to different metrics (e.g., multiple of criteria value differences (ε1, ε2, ε3, . . . ))). The clusters may also be based on default and/or user-defined parameters, and/or average overall weights in a facet of the distance from a target point. The recommendation engine 7114 may include logic to calculate distances in design space to search for designs that are siblings, e.g., close in criterion space but distant in design.
In some embodiments, the recommendation engine 7114 may provide initial recommendations that cover all possible weightings of performance criteria. In such embodiments, the recommended designs 7210 may serve as anchor designs that facilitate further exploration of the simulated designs. Anchor designs may serve as initial points for design searches, e.g., simulated annealing, as described herein. The recommended designs 7210 may be designs that best approximated the performance (with respect to performance criteria) of the CH-designs 7218 and/or P-designs 7214. In embodiments, one or more cluster designs 7220 (
As will be understood, embodiments of the recommendation engine 7114 may present different types of designs within the recommended set of designs 720 that are similar in performance criteria. In certain aspects, the different types of designs may have similar performance criteria but different design parameters that may be more favorable for certain situations.
As will be further understood, in some embodiments, simulations of designs may not be exhaustive, i.e., the set of initial designs 7212 may be incomplete. For example, not every possible combination of clinical trial designs may be initially simulated, and/or a partial set of all clinical trial design combinations may be simulated and processed using one or more of the Pareto, convex hull, and recommendation algorithms/engines. In such cases, when a recommended design 7210 is provided, it may be true that a better, i.e., more optimal, design for the desired performance criteria exists in the space. In some cases, when a design is recommended 7212, the recommendation engine 7114 (and/or primary algorithm 4510, may further explore if there are designs that have better or similar performance to the recommended designs 7210 that have not been simulated. In embodiments, the simulated annealing algorithm/engine 7116 may be used to explore the design space around recommended 7210 and/or selected designs.
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In embodiments, simulations of clinical trial designs 8212 may be executed according to input queues, e.g., queue 8210, of individual simulation runs 8212, as described herein. Queues may be organized based on factors associated with the simulation runs, expected outputs of the simulation runs, and/or relationships between simulation runs. Non-limiting examples of such factors may include similarity, priority, costs, and/or complexity. The relationships may be discovered/identified using machine learning, e.g., artificial intelligence. For example, the simulation runs in a queue may be organized based on time required to run the simulations. In another example, the simulation runs in the queues may be organized to process the most promising designs first, thus facilitating quick access to most the promising designs.
Most promising designs may be identified from historical data and/or machine learning. A most promising design may be a clinical trial design that has a moderate-to-high chance, e.g., greater than 50%, of being a global optimal for a particular set of performance criteria. Historical data may be acquired from one or more data sources in the data facility 138 (
In certain aspects, queues, e.g., queue 8214, may be organized based on time and/or costs. For example, results of a first simulation run may be needed before results of a second simulation run. Additionally, a simulation run may be given a lower priority in a queue, and/or scheduled, so that it runs on a processing system during off-peak hours, thus, lowering costs. Queues may also be organized to execute simulation runs across different hosting providers, e.g., across multiple cloud computing systems. For example, higher priority simulation runs may be queued to run on a first cloud computing system, where the hosting provider charges a premium price for fast results, and lower priority simulation runs may be queued to run on a second cloud computing system, where the hosting provider charges a non-premium price for slower results. In certain aspects, queues may be organized by customer and/or across customers. For example, simulation runs for a first customer may be prioritized over simulation runs of a second customer. Queues may also be organized based on workload and/or work type. Queues may also be organized to assign simulation runs to either a binary computing system or a quantum computing system. For example, simulation runs that fall into the bounded error, quantum, polynomial time class, but outside of P, may be assigned to a quantum computing system, while P class problems may be assigned to a binary computing system. Artificial intelligence, e.g., machine learning, may also be used to organize queues, to include populating and distributing simulation runs. For example, in embodiments, a neural network training set may include a variety of clinical trial designs and whether they were previously selected as being a global optimum design for a particular scenario. Using such a scenario, the neural network may learn to identify promising clinical trial designs and prioritize them in one or more queues. In embodiments queue organization may be based at least in part on metadata associated with the models and/or engines. Metadata may include data regarding what engines, run times, resources, and the like are necessary for simulation.
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As described herein, simulations of trial designs may use simulation engines. Accordingly, referring now to
Entities, e.g., third party and/or in-house developers, may create simulation engines 8512 for use with different design types, design complexity, and/or the like. The created engines 8512 may then be uploaded into the marketplace 8510 via a web interface, an application programming interface, a File Transfer Protocol (FTP) interface or other suitable technology for transferring data and/or software files. The marketplace 8510 may include one or more filters which a user can use to limit and/or control which engines 8512 are displayed based on one or more properties. For example, a user may only want to view engines are configured for a particular clinical trial type (engines 8514, 8516, and 8518) and/or may only want to view engines that have been authored by a trusted developer (engines 8520, 8522, 8524). For example, trial type X, e.g., a cluster randomized design, may require a different type of engine than trial type Y, e.g., an adaptive randomization design.
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Upon being selected, the header section 8612 may be registered with an engine registry of the platform 104, e.g., the engine component 128. Registration of an engine 8610 may include the registry interrogating the header section 8612 to determine one or more required inputs and/or expected outputs of the engine 8610. Registration of an engine 8610 may make the engine 8610 available as a selectable option in one or more of the interfaces of the platform 104, such as in the advisors 114. Registration of the engine 8610 may also include the registry determining one or more values for the inputs to the engine 8610 based on known settings and/or values for various components of the platform 104. For example, an input of an engine 8610 specifying how many trial designs can be simulated concurrently by the engine 8610 may be set to a particular value based on known available memory and/or processing resources the platform 104 can make available to the engine 8610.
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In embodiments, inputs to the engine 8610 defined by the user may be saved for later use, which may include system audits and/or replication of past outputs. For example, a simulation may track the version number and/or inputs of each engine used in the simulation such that the simulation may be reproduced. Versions of each engine and inputs associated with each engine (such as a seed value) may be recorded, stored and/or associated with each trial design, including for purposes of audit or replication.
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Embodiments of the current disclosure may provide for one or more methods and apparatuses for evaluating seemingly disparate simulation engines so that a user can determine the most effective and/or efficient engine(s) to use for a particular simulation. As described herein, simulations may use different design models 126 (
As will be understood, different engines may not be uniform in how they evaluate performance criteria. For example, engines created by different entities may make different assumptions and/or use different logic flows to determine performance criteria for a given simulation. Evaluation of simulated designs often requires that the determined performance of an engine can be correctly and/or practically compared against the determined performance of other engines. As such, embodiments of the current disclosure provide for benchmarking of engines so that their outputs can be normalized to reduce and/or eliminate variations and/or scale the outputs. Reducing variations between engines, in turn, provides for engines to be accurately compared against one another. In embodiments, benchmarking may include simulating one or more designs using various engines. Benchmarking may also include varying one or more parameters common across several different engines/design models and monitoring for corresponding variations/changes in performance criteria, e.g., engine outputs. Based on the changes, a normalizing factor for one or more engines may be determined. Benchmarking may also include providing a set of inputs with a corresponding set of expected outputs, feeding the inputs to one or more engines to generate actual outputs, and comparing the actual outputs to the expected outputs.
Accordingly, referring now to
The set of outputs 9118, 9120, 9126 and/or 9128 may then be evaluated to determine one or more normalization factors 9130. In embodiments, the normalization factors 9130 may be based on delta values 9132 and 9134 generated by comparing one or more of the outputs to each other. For example, in embodiments, the outputs 9118 and 9126 of an engine 9114 may be compared to generate delta value 9132, wherein the delta value 9132 may represent effects that varying the input 9110 had on engine 9114. In embodiments, output 9118 could be compared to outputs 9126, 9120, and 9128 to determine delta value 9134, wherein the delta value 9134 may reflect differences between how engines 9114 and 9116 handles variance to the inputs 9110 and 9112.
In embodiments, the normalization factors 9130 may provide for a common metric by which to measure the performance of one or more of the plurality of engines 9114 and 9116 against each other. In certain aspects, the normalization factors 9130 may be multiplied against one or more of the outputs 9118, 9120, 9126, and/or 9128. In embodiments, the normalization factors 9130 may differ with respect to differences between the inputs 9110 and 9112 and their corresponding variations 9122 and 9124.
In embodiments, a first clinical trial design simulation engine 9114 of the plurality may be structured to simulate a first clinical trial design that is of a different type than a second clinical trial design which a second clinical trial design simulation engine 9116 of the plurality is structured to simulate. For example, engine 9114 may be structured to simulate trial designs comparing two different drugs to each other, while engine 9116 may be structured to simulate trial designs for evaluating non-drug related therapies. In embodiments, a first clinical trial design simulation engine 9114 of the plurality may be of a different version of a second clinical trial design simulation engine 9116 of the plurality. For example, engine 9116 may be an updated version of the engine 9114, wherein 9116 may utilize different logic and/or other programmatic changes. In embodiments, a first clinical trial design simulation engine 9114 of the plurality may have been generated by a first entity and a second clinical trial design simulation engine 9116 of the plurality may have been generated by a second entity of the plurality distinct from the first entity. For example, engine 9114 may be structured to simulate the same type of clinical trial designs for which engine 9116 is structured to simulate, but engine 9114 may have been built by an in-house development team while engine 9116 may have been built by a user of the platform, third-party contractor or separate company. In embodiments, the outputs 9118, 9120, 9126, and/or 9128 may include metadata. Non-limiting examples of metadata may include version number of the engine used, authorship of the engine used, creation/simulation date of the output, and/or other types of properties.
In embodiments, the delta values 9132 and/or 9134 may represent output variability between one or more of the engines 9114 and 9116 for similar inputs, e.g., input 9110, or between the same engine 9114 across an input 9110 and the corresponding variation 9122. In embodiments, the delta values 9132 and 9134 and/or the normalization factors 9130 may be used, in part, to determine valid ranges for the output values of an engine 9114 and 9116. The valid ranges, in turn, may be used to determine whether an engine is providing faulty information, e.g., the engine may have incorrect logic and/or coding errors.
Illustrated in
In embodiments, engine variability may be confined to small number of parameters or values. For example, variations in engine versions (such as from one version to another) may be confined to minor algorithm changes related to corner cases, extreme values or the like. In some cases, various versions of engines may perform exactly the same except for a small range of values at extreme ends or specific values. Engines may be evaluated for exact ranges of inputs and/or outputs for which engines are comparable, ranges of inputs and/or outputs for which engines differences exhibit acceptable error, and range of inputs and/or outputs for which engines are not comparable. Configuration data may be used to indicate for which values and/or ranges of values engines are comparable. Data that is in the comparable range may be marked as comparable. Data in other ranges may be flagged as not comparable or marked with an estimated error for user review. In some cases, a user may specify threshold for acceptable error values.
Referring to
Referring now to
Improving the performance of a set may, in turn, improve the effectiveness and/or cost efficiencies of the related clinical trials.
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In embodiments, a specification 9430, e.g., a data file (to include one or more records in a relational and/or object database) and/or written document, may record and/or define the one or more associations 9418. The specification 9430 may be stored in one or more databases within the data facility 138 (
As will be explained in greater detail below, one or more clinical trial designs 9432, 9434, 9436, 9440, 9442, 9444, 9448, 9450 and 9452 (collectively referred to as 9456) may be generated for each of the clinical trials 9410 based at least in part on the specification 9430 and/or associations 7118. For example, three (3) clinical trial designs 9432, 9434, and 9436 (collectively referred to herein as 9438) may be generated for clinical trial A 9412, three (3) clinical trial designs 9440, 9442, and 9444 (collectively referred to herein as 9446) may be generated for clinical trial B 9414, and three (3) clinical trial designs 9448, 9450, and 9452 (collectively referred to herein as 9454) may be generated for clinical trial C 9416. While the foregoing example includes three (3) clinical trials each having three (3) corresponding clinical trial designs, it will be understood that any number of two or more (>2) clinical trials 9410 may be used with any number of corresponding clinical trial designs 9456.
Turning to
Combined performance criteria 9526 may be generated for each item of the permutation set 9510 where the combined performance criteria represents the collective performance criteria of the clinical trials within the item. For example, as shown in
Analysis of the combined performance criteria 9526 may provide for determination of which set/permutation/combination of designs is the optimal combination to use for the set of clinical trials 9410.
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In embodiments, the method 9600 may include applying a second filter to the permutation set 9712 and/or the combination Pareto set. In embodiments, the second filter may be based at least in part on a convex hull analysis, as described herein. In such embodiments, the second filter may be applied to the combination Pareto set wherein the recommended items of the permutation set are on a convex hull of the combination Pareto set.
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In embodiments, the apparatus 9800 may include a first filtering circuit 9822 structured to filter the permutation set 9510. The first filter 9822 may be based at least in part on a Pareto analysis and generate a combination Pareto set 9824, as discussed herein. In such embodiments, the recommendation circuit 9820 may be further structured to select the recommendation 9830 from the combination Pareto set 9824.
In embodiments, the apparatus 9800 may include a second filtering circuit 9826. The second filtering circuit 9826 may be based at least in part on a convex hull analysis. In embodiments, the second filtering circuit may filter the combination Pareto set 9824. In such embodiments, the recommendation circuit 9820 may be further structured to select the recommendation 9830 from the set of points within the combination Pareto set that fall on the convex hull 9828. Embodiments of the apparatus 9800 may include additional circuits that may perform other types of analysis, e.g., simulated annealing, Monte Carlo, and/or the like.
As will be appreciated, by generating permutations based on associations 7118, as described herein, embodiments of the disclosure may determine optimized combinations and/or execution orderings for two or more clinical trials. For example, it may be the case that clinical trial A and clinical trial C can execute at the same facility at the same time with the same administrative staff, while clinical trial B needs to execute after clinical trial C due to dependencies. Embodiments of the current disclosure may also determine whether certain portions/subparts of two or more clinical trials should be executed together (either in time and/or location) or separately (either in time and/or location). In other words, some embodiments of the current disclosure may provide for an overall ordering and/or sequencing of multiple clinical trials, to include ordering of portions/subparts of the clinical trials. Further, filtering the permutation set, as described herein, may reduce the number of non-optimal combinations that need to be considered, thus reducing the amount of time to determine the optimal combination.
In embodiments, the platform's 104 (
As such, embodiments of the platform 104 may operate in a forward mode of operation and/or an inverse mode of operation. In “forward” operation mode, the platform 104 may be used to provide design recommendations for fixed scenario probabilities over a user selected range of criteria weights, as disclosed herein. In “inverse” operation mode (also referred to herein as “backwards” operation mode), however, the platform 104 may be used to assess the impact of departures from the assumed probabilities of the scenarios (e.g., a departure modeled by multinomial distribution with n=1). In embodiments, the inverse operation mode may be used to compute design performance on multiple criteria for a vector of criteria weights, which may be fixed, while varying multinomial probability vectors. This may be done using algorithms for the forward operation mode by interchanging the role of the multinomial probabilities and the weights. As will be appreciated, this interchanging of roles is possible, in part, due to the mathematical models of the forward and backward modes of operation being duals of each other, in the sense that fixing either the weights or the scenario probabilities typically leads to the same linear model structure for the design performance value.
A measure of the robustness, also referred to herein as a “robustness value”, of a clinical trial design may correspond to a size of the range of scenario probabilities for which the design is optimal. In embodiments, this range is convex, thus providing for the application of Pareto analysis/optimality, convex hull analysis, and/or simulated annealing. In embodiments, the dimension of the vector of the multinomial distribution for scenarios may be reduced by exploiting uniformity of probabilities over subsets of scenarios (e.g., using three (3) or five (5) ordered categories of likelihood) and/or functional relations between scenario probabilities. This may result in reductions in the number of multinomial vectors and speeds up computations.
In embodiments, if a user, e.g., 102 (
Accordingly, illustrated in
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In embodiments, the forward and inverse modes of operations can be executed sequentially over a plurality of iterations. In some examples, designs may be evaluated in the forward mode of operation to evaluate designs. Designs may be evaluated for different performance parameter weights to determine one or more designs of interest for the weights. The designs of interest for the determined weights may be further evaluated to determine the robustness of the designs for scenario. For each design, the platform may be operated in reverse mode for each design of interest to determine the robustness of each design. In some cases, the robustness results may reveal that the design of interest has unsatisfactory robustness. In response to unsatisfactory robustness the platform may be operated in forward mode to find new designs of interest. In some cases, the operation of platform in the forward mode may be modified based on the robustness results. Modifications may include changing weighting of performance criteria, changing design criteria, changing scenario criteria, and the like. Forward mode of operation may be used to find new designs of interest and the platform may be again operated in reverse mode to identify robustness of the new designs of interest. The cycles of forward and reverse operation may be repeated until design with acceptable robustness and performance are found.
Referring to
Accordingly, the method 10200 includes obtaining a first simulation output for a first set of clinical trial designs for the clinical trial 10210. The first simulation output includes first performance parameters, as disclosed herein, associated with each design in the first set of clinical trial designs for a first set of criteria. The method 10200 further includes determining, from the first set of criteria, a first optimality criteria for evaluating the first set of clinical trial designs 10212. The method 10200 further includes determining, within the first set of clinical trial designs, a first globally optimum design based at least in part on the first optimality criteria and the first performance parameters 10214. The clinical trial may then be configured based at least in part on the first globally optimum design, e.g., the clinical trial may be made to conform to the globally optimum design.
As further shown in
After the start 10218 of the clinical trial, but before the stop 10220, the globally optimum design may be reassessed. As such, the method 10200 includes obtaining, during conduction of the clinical trial, a second simulation output for a second set of clinical trial designs for the clinical trial 10222. The second simulation output includes second performance parameters associated with each design in the second set of clinical trial designs for a second set of criteria. In embodiments, the second simulation output may be different than the first simulation output. For example, the second simulation output may be from another evaluation of the clinical trial designs. In embodiments, the second simulation output may be the same as the first simulation output. For example, the first simulation output may be reused. In embodiments, the second performance parameters may be different than the first performance parameters. For example, the second performance parameters may include more or fewer parameters than the first performance parameters. In embodiments, the second performance parameters may be the same as the first performance parameters. In embodiments, the second set of designs may be the same or different than the first set of designs. For example, the second set of designs may include additional designs and/or have removed designs as compared to the first set of designs. In embodiments, the second set of criteria may be the same or different than the first set of criteria. For example, constraints on the clinical trial may have changed since the start 10218.
The method 10200 further includes determining, from the second set of criteria, a second optimality criteria for evaluating the second set of clinical trial designs 10224. In embodiments, the second optimally criteria may be the same or different from the first optimally criteria. For example, a user may have previously determined the globally optimum design with respect to shortest duration and wish to do so again for the second globally optimum design. As another example, a user may have previously determined the globally optimum design with respect to shortest duration and may now wish to determine the globally optimum design with respect to costs.
The method 10200 further includes determining, within the second set of clinical trial designs, a second globally optimum design 10226. Determination of the second globally optimum design may be based at least in part on the second optimality criteria and the second performance parameters. The method 10200 may further include adjusting the clinical trial based at least in part on the second globally optimum design 10228. Adjustment of the clinical trial may include conforming the clinical trial to the second globally optimum design.
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In addition to the design of a clinical trial, the success of the clinical trial often depends on the ability to recruit a satisfactory number of patients, also referred to herein as “subjects”, suitable to participate in the clinical trial. The number of suitable patients available to be recruited for a clinical trial is, in turn, typically a function of the sites selected for the clinical trial, also referred to herein as a “site selection”.
In some cases, a wrong choice in the selection of sites for a clinical trial may reduce the usefulness of the trial even if the trial is executed without error. In some cases, a wrong choice in the selection of sites for a clinical trial may inhibit and/or prevent completion of the clinical trial, e.g., not enough suitable patients are recruited to satisfy applicable guidelines and/or industry requirements. In some cases, different choices in site selection for a clinical trial may result in very different costs, completion times, and/or other performance parameters for the clinical trial.
The selection of sites for a clinical trial may include considerations and tradeoffs between hundreds or even thousands of site selections, also referred to herein as site selection options, e.g., different groupings/sets of selected sites. For example, different site selection options, often have different values for performance criteria, e.g., the type of clinical trial being conducted, the minimum and/or maximum number of suitable patients available to be recruited, the time required to complete the clinical trial, the costs associated with conducting the clinical trial, and/or the like. Traditionally, site selection for clinical trials has been based on heuristics and experienced professionals to determine a set of parameters likely to result in a site selection that produces a successful clinical trial. However, traditional approaches are not capable of evaluating more than a handful of site selection options and corresponding tradeoffs. As a result, traditional approaches to site selection often miss site selection options that may result in better performance. As the cost of a clinical trial may exceed tens of millions or even hundreds of millions of dollars and/or may take years to complete, small differences in the performance between site selections for a clinical trial may result in large impacts on the overall cost and/or time associated with the clinical trial.
The complexity of site selection often requires aspects of statistical expertise, clinical design expertise, and software expertise, which may not be available in many organizations. As such, many organizations fallback on the use of generic site selection methodologies due to their inability to find optimal or near-optimal site selections for a particular clinical trial.
Accordingly, embodiments of the current disclosure may provide for a site selection platform, systems, and methods for evaluation and/or comparison of site selection options for a clinical trial. In embodiments, evaluation and/or comparison may include a large number of site selection options. In some embodiments, the platform, systems, and methods described herein may be used to evaluate hundreds, thousands, or even millions of site selection options for a clinical trial and may be used to find the optimal or near-optimal site selection for a trial.
The site selection platform may be used for site selection. In embodiments, a site selection platform may support a team, as described herein, in collaborating and surfacing all the inputs that are key to consider for preparing and selecting an optimal site selection. The site selection platform may use cloud and distributed computing so the team can simulate hundreds of millions of site selection variants/options across all those inputs. The site selection platform may present the team with prioritized options and visualizations to enable the interrogation of the drivers of value.
A site selection platform may enable a team to quickly identify optimal site selections and the factors that most strongly drive performance factors, strategic goals, and the like. A site selection platform, as described herein, may leverage emerging technologies to provide options for advanced simulations, distributed computing, visualizations, and the like. The site selection platform may leverage methodological knowledge, analysis of the business value of different design choices, and/or analysis of regulatory risk and operational complexity to determine optimum or near optimum site selections. The site selection platform may determine optimum or near optimum site selections by leveraging a novel workflow, speed and/or computing innovations, and/or powerful visualizations for study analysis and optimization.
A site selection platform may improve how data and processes are used to make better decisions on site selections. Improvements may result from recognizing which innovative options might significantly increase goals. Improvements may be obtained by communicating the benefits of specific site selections in a way that that intuitively allows a variety of team members to understand a particular site selection and/or possible options for the site selection of a clinical trial. A site selection platform may support a team in collaborating and surfacing all the inputs that are key to consider for preparing and selecting an optimal site selection. The site selection platform may present the team with prioritized options and insightful visualizations to enable interrogation of the drivers of value.
A user may interact with the platform 10404 through one or more user devices 10402 (e.g., computer, laptop computer, mobile computing device, and the like). The platform 10404 may be implemented and/or leverage one or more computing resources 10450 such as a cloud computing service 10452, servers 10454, software as a service (SaaS), infrastructure as a service (IaaS), platform as a service (PaaS), desktop as a Service (DaaS), managed software as a service (MSaaS), mobile backend as a service (MBaaS), information technology management as a service (ITMaaS), and the like. The platform 10404 may be provided or licensed on a subscription basis and centrally hosted (e.g., accessed by users using a client (for example, a thin client) via a web browser or other application, accessed through or by mobile devices, and the like). In embodiments, elements of the platform 10404 may be implemented to operate on various platforms and operating systems. In embodiments, interfaces for the user device 10402 through which the users may interact with the platform may be served to the user device 10402 through a webpage provided by a server of the platform 10404, an application, and the like.
The platform 10404 may include one or more facilities such as a configuration facility 10406, simulation facility 10410, analysis facility 10408, interfaces facility 10412, data facility 10438, and computation resources 10450.
The configuration facility 10406 may include advisors 10414, which may include one or more wizards, tools, algorithms, recommenders, configuration elements, questioners, and the like. Advisors may be used to receive data and/or define or develop space definitions 10416.
Space definitions 10416 may include aspects of site selection criteria space 10510 (
Space definitions 10416 may include aspects of site selection space 2412 (
Space definitions 10416 may include aspects of site selection scenario space 2414 (
Space definitions 10416 may include aspects of site selection performance space 2416 (
The configuration facility 10406 may include a combinations component 10418. The combinations component 10418 may automatically or semi-automatically define the design space and/or scenario space that may be evaluated by the platform 10404.
The simulation facility 10410 of the platform 10404 may, based on the space definitions from the configuration facility 10406, evaluate the site selections. The simulation facility 10410 may include models 10426. As used herein with respect to site selection, a model includes the combination of parameters and the values that describe a site selection and/or corresponding clinical trial designs and the scenario under which the site selection is evaluated. Models 10426 may include hundreds or even thousands of models. Models 10426 may include deviation specifications for one or more of the parameters of the models. A deviation specification may define a range of values, a distribution of values, and/or a function of values for one or more parameters of a model. The deviation specifications may be based on expected or previously measured distributions or variations in design parameters.
The simulation facility 10410 may include engines 10428. As used herein, engines may relate to the codification of a site selection and/or corresponding clinical trial design that can receive model parameters and run a simulation to generate an output. The output of the engines 10428 may be a predicted behavior for a site selection for one or more corresponding clinical trial designs and/or one or more scenarios and/or conditions. Engines 10428 may evaluate a site selection with analytical methods, mathematical methods, numerical methods, simulation, and/or the like. Evaluating a site selection may include a simulation run to determine performance of the site selection. Evaluating a site selection may include using a Monte Carlo approach to simulate a site selection for different values according to the deviation specifications and using statistical methods to determine the performance of the site selection from a simulation run.
The simulation facility 10410 may include search/exploration component 10430. The search/exploration component may facilitate modification of model parameters for simulation. The search/exploration component 10430 may adaptively modify or generate models for simulations based on simulation results of other models/site selections and/or based on triggers and data from other facilities of the platform 10404.
The analysis facility 10408 may be configured to analyze simulation results of site selections. The analysis facility 10408 may include a filtering component 10420. The filtering component 10420 may be configured to use one or more numerical and/or analytical methods to evaluate and compare the performance of evaluated site selections. The filtering component may identify optimal or near-optimal site selections for one or more performance parameters. The filtering component may search the performance space and identify a set of optimal and/or near optimal site selections for one or more performance parameters.
The analysis facility 10408 may include a recommendation component 10422. The recommendation component 10422 may provide site selection recommendations. The site selection recommendations may be based on optimal or near-optimal site selections determined by the filtering component 10420. Recommendations may be adaptive based on settings, feedback, selections, triggers, and the like from the user, and/or other facilities in the platform 10404.
The analysis facility 10408 may include an augmenting component, 10424. The augmenting component may supplement simulation results with real-world data.
The interfaces facility 10412 may be configured to provide visualizations and interfaces for comparing, searching, and evaluating simulated site selections. Visualization component 10432 may provide for one or more interfaces to visualize the performance of site selections and facilitate comparison of site selections by a user. The feedback analysis component 10434 may track user actions associated with the interfaces and visualizations to determine patterns and/or preferences for site selections. The tradeoff advisor component 10436 may analyze and provide data and guidance for evaluating tradeoffs between two more site selections.
The platform 10404 may include and/or provide access to one or more data facilities 10438. Data in the data facilities may include design histories 10440, simulation data 10442, site data 10444, resource data 10446, population data 10448, and the like.
The stages of the process may include an evaluate stage 10504. The evaluate stage 10504 may configure models 10518 for evaluation using simulation 10520 and analytical methods 10524. The stage may include various methods of enhancing computation and simulation using parallelization and resource management 10522.
The stages of the process may include an augment stage 10506. The augment stage 10506 may add real-world data to the simulation data. Financial data 10526, regulatory data 10528, revenue data 10530, and the like may be added to the and used to augment data from simulations.
The stages of the process may include an explore and analyze stage 10508. The explore and analyze stage 10508 may include filtering methods and algorithms 10532 for identifying optimal site selections. The stage may include generating and interacting with visualizations 10534 and tradeoff analysis tools 10534 to compare and select site selections.
In embodiments, the platform 10404 (
In embodiments, an optimum site selection is a site selection that achieves most desirable values for two or more specific site selection performance parameters. In the case of optimality for multiple site selection performance parameters, optimality may require a tradeoff between the parameter values. For example, a site selection that has a lower cost may have a low NPV and therefore may not be desirable. The optimality of a site selection may be based on a function of site selection performance parameters. In some cases, a function may be a weighted sum of the site selection performance parameters. A function, or a set of functions, may be used to generate an overall score (or a set of scores) and the score may be used to determine the optimality of the site selection. A highest score, a specific score, lowest score, and the like may be considered optimal depending on the function used to compute the score.
In embodiments, optimality may be evaluated according to Pareto optimality. Pareto optimal site selections may be site selections where no individual site selection performance parameter can be better off without making at least one other individual site selection performance parameter worse off. In some cases, optimality may be determined using convex hull analysis.
In some cases, one site selection may be globally optimum. In some cases, more than one site selection may be globally optimum. In some cases, no site selections may be globally optimum. In some embodiments, optimality of site selection may be relative to a benchmark. A known site selection, a set of historical site selections, and/or the like may be used as a benchmark. Site selections may be considered optimal if they meet, exceed, and/or are within a threshold distance of the benchmark site selection performance parameters.
Site selection performance parameters that may be used to determine site selection optimality may be user defined, system defined, algorithmically defined, and/or the like. In some cases, users may specify a subset of site selection performance parameters that should be used to identify optimal site selections. A user may define optimality criteria by defining ranges, values, characteristics, and the like of the parameter values that may be considered desirable and/or optimal. Interactive graphical interfaces may be provided to a user to evaluate different site selections based on one or more optimality criteria. Interactive interfaces may allow a user to explore different site selections by changing scoring methods, weights associated with the criteria, and the like.
In embodiments, the characteristics of site selection performance parameters for evaluated site selections may be analyzed by the platform to determine if any of the parameters may be less important for optimality. For example, analysis may include evaluation of ranges, variability, and other statistical analysis. If one or more site selection performance parameters for all evaluated site selections is within a desirable range, or the site selection performance parameter is almost equal for all of the evaluated site selections, the site selection performance parameter may be removed and identified as less significant for optimality and, in some cases, may not be factored in when determining optimality. Prior to determining optimality based on site selection performance parameters, the site selection performance parameters and the values of the site selection performance parameters may be grouped, filtered, normalized, and the like.
Optimality of site selections may be redefined automatically, semi-automatically, in response to user input, and/or the like. The criteria for optimality of site selections may change as site selections are evaluated by the platform. For example, initial optimality criteria may produce no optimal site selections. In response to no optimal site selections being determined, the criteria may be changed (relaxed, increased, decreased, etc.) until at least one site selection is considered optimal. In another example, optimality criteria may change in response to user feedback. Users may evaluate initial site selections found to be optimal and provide feedback (direct feedback and/or indirect feedback that can be derived from user actions and inactions). The feedback from the user may be used to change how optimality is determined, which site selection performance parameters are used to determine optimality, the values of the site selection performance parameters that are considered optimal, and/or the like.
In some embodiments, site selection performance parameters may be grouped, ordered, and/or organized into one or more hierarchies, groups, and/or sets. Two or more different optimality criteria may be used in parallel to determine multiple sets of optimal site selections under different criteria. Two or more different optimality criteria may be used sequentially to determine optimal site selections. One criteria may first be used to identify a first set of optimal site selections under first criteria. A second set of criteria may then be used on the first set to reduce the set of optimal site selections.
In embodiments, a site selection may be globally optimum if the site selection is optimal with respect to all possible site selection options. In embodiments, a site selection may be globally optimum if the site selection is optimal with respect to possible site selection options for one or more criteria. In embodiments, a site selection may be globally optimum if the site selection is optimal with respect to a large percentage (such as 80% or more) of possible site selection options for one or more criteria. In embodiments, a site selection may be globally optimum if the optimality of the site selection is within a high confidence level (90% confidence) with respect to possible site selection options for one or more criteria.
Traditional methods for evaluating site selections cannot determine global optimum site selections since they evaluate one, several, or a small subset of site selection options. Traditional methods do not consider all or almost all of the site selection options and cannot find a global optimum.
Trial site selections may involve numerous variables, parameters, considerations, tradeoffs, and the like resulting in a very large number of possible variations. A large number of possible variations makes study site selections and optimization using traditional methods difficult. In many cases, traditional methods may fail to explore or consider the complete space of possible trial site selection options and may miss or never consider globally optimal site selections. Using traditional methods, the number of site selection variations that may be explored in a reasonable time is limited. In some cases, only one (1) statistical site selection and only three (3) clinical scenarios may be evaluated. The best site selection study of the limited number of variations may not result in a globally optimal site selection. A locally optimum site selection chosen from a limited number of considered site selections may represent one (1) local maximum but may be far from the globally optimum site selection. When 10,000 or more clinical scenarios are considered, a globally optimum site selection may be distinguished from the many locally optimum site selections. However, consideration of 10,000 clinical scenarios cannot be practically performed using traditional methods as it would require an estimated 50,000 hours or more to complete.
In embodiments, the platform and methods described herein may evaluate thousands or even millions of site selection options enabling a determination of a global optimum site selection. In many cases, the globally optimum site selection may have significant advantages over locally optimum site selection. In one example, a globally optimum site selection may require less time to complete than other site selections.
In embodiments optimization of trial site selections may occur sequentially after optimization of trial design. In one embodiment, a globally optimum trial design may be determined using the techniques described herein. After the globally optimum trial design is determined a globally optimum trial site selection may be determined for the determined trial.
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In an embodiment, a method for guiding a user through configuring a site grouping/selection system/platform for optimizing site selection for patient recruitment for a clinical trial is provided. The method includes generating an interactive interface. The method further includes presenting, via the interactive interface, a plurality of prompts to a user structured to configure a site selection system for determining which subgrouping, of a plurality of possible sites for recruiting patients from for a clinical trial, globally optimizes a desired criteria. The method further includes for each of the plurality of prompts, receiving a responsive user input, and configuring the site selection system based at least in part on the responsive user inputs.
In another embodiment, a system for guiding a user through configuring a site grouping/selection system/platform for optimizing site selection for patient recruitment for a clinical trial is provided. The system includes a server structured to determine which subgrouping of a plurality of possible sites for recruiting patients from for a clinical trial globally optimizes a desired criteria. The system further includes an electronic device, e.g., 10402, structured to: display an interactive interface that presents a plurality of prompts to a user for configuring the server; for each of the plurality of prompts, receive a responsive user input; and configure the server based at least in part on the responsive user inputs.
In another embodiment, a non-transitory computer readable medium storing instructions is provided. The stored instructions, when loaded into at least one processor, adapt the at least one processor to: generate an interactive interface; and present, via the interactive interface, a plurality of prompts to a user. The plurality of prompts are structured to configure a site selection system for determining which subgrouping, of a plurality of possible sites for recruiting patients from for a clinical trial, globally optimizes a desired criteria. The stored instructions further adapt the at least one processor to, for reach of the plurality of prompts, receive a responsive user input; and configure the site selection system based at least in part on the responsive user inputs.
Embodiments of the current disclosure may provide for prediction of an initial site grouping/selection with respect to patient recruitment of a clinical trial. In embodiments, the initial site selection may be structured to maximize (globally optimize) one or more desired criteria, e.g., one or more parameters within site selection criteria space 10510, site selection space 10512, site selection scenario space 10514, and/or site selection performance space 10516, based on historical data. For example, in embodiments, a predicted initial site selection may correspond to maximizing a number of patients with a particular medical condition. In other embodiments, the predicted initial site selection may correspond to maximizing the number of recruited patients who are likely to complete the clinical trial.
In embodiments, the historical data may include data from previously conducted clinical trials and/or it may include data from prior simulated clinical trials. In embodiments, the data may be stored in data facility 10438 and/or be generated by the simulation component 10410 and/or the analysis components 10408. Data from past trials may be used to directly predict aspects of sites. Data from past trials may be used as a guide to determine parameters of the trials that were successful since in many cases, past indicators of success may translate to future success. For example, sites identified as having a high historical recruitment rate may generally be expected to have high recruitment rate for a future study. However, in some cases, depending on the parameter, a high success rate in historical data may translate to a negative or less favorable prediction for the current site selection. For example, a site as having a historical high recruitment for patients with a rare disease may translate to a prediction for low recruitment of the same type of patients for a new study. In some cases, depending on the therapeutic tested, a waiting period for the patients involved in the previous study may be required before they are allowed to participate in a new study making the patients unavailable for a new study. Therefore, an indication of high success in historical data may indicate that the patients will not available and may indicate a low performance for a planned study in the site. In embodiments, models for site selection may be evaluated for negative and positive associations between historical performance and expected current performance.
The prediction may be generated prior to receiving user input or after receiving some user input e.g., via user device 10402. The predicted initial site grouping/selection may be displayed in a graphical user interface, e.g., interface component 10412, for adjustment by a user. The predicted initial site grouping/selection may be the grouping/selection actually used in the clinical trial, or it may serve as a starting point which the user can configure/tweak as desired. The predicted initial site grouping/selection may be the global optimal, with respect to the desired site selection criteria; or it may be close to the global optimal, wherein a user can tweak it, i.e., make adjustments, to be the global optimal. The initial prediction may reduce the amount of time to find the global optimum by providing the user (or computer) with a good starting point based on knowledge gained from historical data. Simulated annealing, e.g., via the search/exploration modules/engines 10430, may be applied to the initial prediction to test the surrounding subgroupings. Artificial intelligence may be used to analyze the historical data based on known desired criteria for the clinical trial. For example, in embodiments, a neural network may be trained on historical data to identify patterns in site selections that result in particular values for one or more site selection criteria. The neural network may then process site selection data, i.e., data regarding possible sites for a clinical trial, and then generate a predicted initial site selection.
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Embodiments of the current disclosure may also provide for a method for using the initial site selection. The method may include receiving an initial site selection for recruiting patients for a clinical trial; and conducting a clinical trial based as least in part on the initial site selection. The initial site selection may correspond to a global optimization of a desired criteria, wherein the initial site selection was predicted from past trial site selection data. For example, a first entity may generate initial site selection data and send it to a second entity that conducts a clinical trial based at least on part on the initial site selection data.
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Exploration/evaluation of the spaces may provide insights to a user regarding known and/or unknown constraints on site selection and/or the impact a particular selection parameter, e.g., a parameter within one of the spaces, may have on patient recruitment.
Exploration of the spaces may be facilitated via visualizations of the spaces. The visualizations may include, and/or be based at least in part on, heatmaps and/or tornado graphs. The interface 12010 may include a canvas area 12012 for rendering (or rasterizing) the visualizations.
The interface 12010 may provide for users to adjust one or more selection parameters and/or adjust sites within one or more proposed site selections/groupings and see the effect on the predicted patient recruitment. Adjustment of the selection parameters may be facilitated by one or more interactive widgets 12014, e.g., text boxes, buttons, sliders, and/or the like. In embodiments, adjustment of the selection parameters may be facilitated via the canvas 12012. In embodiments, the interface 12010 may allow users to evaluate and compare possible site selections/groupings side-by-side.
In embodiments, exploration of the spaces may provide for sensitivity analysis. For example, embodiments of the interface 12010 may incorporate simulated annealing engines, as described herein.
In embodiments, platform/system 12000 may include a server, e.g. server 10454 in the computation resources 10450 of platform 10404. The server 10454 may generate the interface 12010 as a web application, remote desktop, and/or other suitable architecture for providing the interface 12010 to users and/or user devices 10402.
The platform may support collaboration among different users. For example, the server 10454 may generate multiple interfaces 12010, 12016, and 12018. In embodiments, the interfaces 12010, 12016, and 12018 may be configured/tailored to different types of user/target audience, e.g., users with different levels of experience and/or knowledge with respect to evaluating site groupings/selection for various criteria. For example, a first interface 12010 for an expert user may have more functionality, e.g., access to more options and/or features, than a second interface 12016 for a novice user.
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Accordingly, the method 12300 includes obtaining a first simulation output for a first set of site selections for a clinical trial 12310. The first simulation output includes first site selection performance parameters, as disclosed herein, associated with each design in the first set of site selections for a first set of site selection criteria. The method 12300 further includes determining, from the first set of site selection criteria, a first optimality criteria for evaluating the first set of site selections 12312. The method 12300 further includes determining, within the first set of site selections, a first globally optimum site selection based at least in part on the first site selection optimality criteria and the first site selection performance parameters 12314. Optimum site selections may be determined using one or more of Pareto analysis, convex hull analysis, and/or simulated annealing analysis. The site selection may then be configured based at least in part on the first globally optimum site selection, e.g., the site selection may be made to conform to the globally optimum site selection.
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After the start 12318 of the clinical trial, but before the stop 12320, the globally optimum site selection may be reassessed. As such, the method 12300 includes obtaining, during conduction of the clinical trial, a second simulation output for a second set of site selections for the clinical trial 12322. The second simulation output includes second site selection performance parameters associated with each design in the second set of site selections for a second set of site selection criteria. In embodiments, the second simulation output may be different than the first simulation output. For example, the second simulation output may be from another evaluation of the site selections. In embodiments, the second simulation output may be the same as the first simulation output. For example, the first simulation output may be reused. In embodiments, the second site selection performance parameters may be different than the first site selection performance parameters. For example, the second site selection performance parameters may include more or fewer parameters than the first site selection performance parameters. In embodiments, the second site selection performance parameters may be the same as the first site selection performance parameters. In embodiments, the second set of site selections may be the same or different than the first set of site selections. For example, the second set of site selections may include additional sites selections and/or have removed site selections as compared to the first set of site selections. In embodiments, the second set of site selection criteria may be the same or different than the first set of site selection criteria. For example, constraints on the clinical trial and/or site selections may have changed since the start 12318.
The method 12300 further includes determining, from the second set of site selection criteria, a second site selection optimality criteria for evaluating the second set of site selections 12324. In embodiments, the second site selection optimally criteria may be the same or different from the first site selection optimally criteria. For example, a user may have previously determined the globally optimum site selection with respect to shortest duration and wish to do so again for the second globally optimum site selection. As another example, a user may have previously determined the globally optimum site selection with respect to shortest duration and may now wish to determine the globally optimum site selection with respect to costs.
The method 12300 further includes determining, within the second set of site selections, a second globally optimum site selection 12326. Determination of the second globally optimum site selection may be based at least in part on the second site selection optimality criteria and the second site selection performance parameters. The method 12300 may further include adjusting the site selection based at least in part on the second globally optimum site selection 12328. Adjustment of the site selection may include conforming the site selection to the second globally optimum site selection.
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Recommendation may include transmitting the globally optimum site selections to an entity performing and/or planning the clinical trial. The recommended globally optimum site selections may be the first time a globally optimum site selection was calculated/determined for the clinical trial, or the globally optimum site selection may be an update to a previously calculated/determined globally optimum site selection. In embodiments, the method 12400 may not include recommending the globally optimum site selection, but rather may include adjusting the site selection based at least in part on the globally optimum site selection 12426. It is to be understood, however, that embodiments of the method 12400 may not include adjusting the site selection trial based at least in part on the globally optimum site selection. In embodiments, the method 12400 may include both recommending and adjusting the site selection based at least in part on the globally optimum site selection.
In addition to the design of a clinical trial, the success of the clinical trial often depends on the availability of resources needed to conduct the clinical trial, also referred to herein as “resource availability”. Non-limiting examples of trial resources include: drugs/drug supply, medical devices, procedures, administrative personnel, and/or equipment/devices needed to conduct a clinical trial, and/or the like. Resource availability, in turn, is typically a function of a site selection.
In some cases, a wrong choice in the selection of sites for a clinical trial may reduce resource availability which, in turn, may impact and/or prevent completion of the clinical trial. In some cases, difference in available resources between different site selections may result in very different costs, completion times, and/or other performance parameters for the clinical trial.
The selection of sites for a clinical trial, with respect to optimizing available resources, may include considerations and tradeoffs between hundreds or even thousands of site selections. For example, different site selection options, often have different values for resource availability, e.g., the sites of a first site selection may be closer to medical supply distribution centers than the sites of a second site selection. Traditionally, consideration of resource availability for clinical trials has been based on heuristics and experienced professionals to determine a set of parameters likely to result in a site selection that produces adequate access to resources. However, traditional approaches are not capable of evaluating more than a handful of site selection options and corresponding tradeoffs. As a result, traditional approaches to resource availability often miss site selection options that may result in greater resources availability. As the cost of a clinical trial may exceed tens of millions or even hundreds of millions of dollars and/or may take years to complete, small differences in resources availability between site selections for a clinical trial may result in large impacts on the overall cost and/or time associated with the clinical trial.
The complexity of site selection with respect to resource availability often requires aspects of statistical expertise, clinical design expertise, and software expertise, which may not be available in many organizations. As such, many organizations fallback on the use of generic site selection methodologies due to their inability to find optimal or near-optimal site selections with respect to resource availability for a particular clinical trial.
Accordingly, embodiments of the current disclosure may provide for a resource optimization platform, systems, and methods for evaluation and/or comparison of site selection options with respect to optimizing resource availability for a clinical trial. In embodiments, evaluation and/or comparison may include a large number of site selection options. In some embodiments, the platform, systems, and methods described herein may be used to evaluate hundreds, thousands, or even millions of site selection options for a clinical trial and may be used to find the optimal or near-optimal resource availability for a trial.
The resource optimization platform may be used for site selection. In embodiments, a resource optimization platform may support a team, as described herein, in collaborating and surfacing all the inputs that are key to consider for preparing and selecting a site selection to optimize available resources. The resource optimization platform may use cloud and distributed computing so the team can simulate hundreds of millions of site selection variants/options across all those inputs. The resource optimization platform may present the team with prioritized options and visualizations to enable the interrogation of the drivers of value. In an embodiment, available clinical trial resources may have an initial distribution across one or more sites. For example, a first site may have forty (40) kg of a drug and a second site may have twenty (20) kg of a drug. In embodiments, the platform may determine a site selection based on the initial distribution of one or more available clinical trial resources. In embodiments, the platform may determine one or more adjustments to the initial distribution to optimize availability of the one or more clinical trial resources and/or site selection. In embodiments, the adjustments to the initial distribution may facilitate a different clinical trial design and/or a different type of clinical trial design that was not previously possible given the initial distribution of the one or more available clinical trial resources. In embodiments, the platform may recommend adjustments to the initial distribution.
A resource optimization platform may enable a team to quickly identify site selections that optimize available resources and the factors that most strongly drive performance factors, strategic goals, and the like. A resource optimization platform, as described herein, may leverage emerging technologies to provide options for advanced simulations, distributed computing, visualizations, and the like. The resource optimization platform may leverage methodological knowledge, analysis of the business value of different design choices, and/or analysis of regulatory risk and operational complexity to determine optimum or near optimum site selections with respect to resource availability. The resource optimization platform may determine optimum or near optimum site selections by leveraging a novel workflow, speed and/or computing innovations, and/or powerful visualizations for study analysis and optimization.
A resource optimization platform may improve how data and processes are used to make better decisions on site selections. Improvements may result from recognizing which innovative options might significantly increase goals. Improvements may be obtained by communicating the benefits of specific site selections in a way that that intuitively allows a variety of team members to understand a particular site selection and/or possible options for the site selection of a clinical trial. A resource optimization platform may support a team in collaborating and surfacing all the inputs that are key to consider for preparing and selecting an optimal site selection. The resource optimization platform may present the team with prioritized options and insightful visualizations to enable interrogation of the drivers of value.
A user may interact with the platform 12504 through one or more user devices 12502 (e.g., computer, laptop computer, mobile computing device, and the like). The platform 12504 may be implemented and/or leverage one or more computing resources 12550 such as a cloud computing service 12552, servers 12554, software as a service (SaaS), infrastructure as a service (IaaS), platform as a service (PaaS), desktop as a Service (DaaS), managed software as a service (MSaaS), mobile backend as a service (MBaaS), information technology management as a service (ITMaaS), and the like. The platform 12504 may be provided or licensed on a subscription basis and centrally hosted (e.g., accessed by users using a client (for example, a thin client) via a web browser or other application, accessed through or by mobile devices, and the like). In embodiments, elements of the platform 12504 may be implemented to operate on various platforms and operating systems. In embodiments, interfaces for the user device 12502 through which the users may interact with the platform may be served to the user device 12502 through a webpage provided by a server of the platform 12504, an application, and the like.
The platform 12504 may include one or more facilities such as a configuration facility 12506, simulation facility 12510, analysis facility 12508, interfaces facility 12512, data facility 12538, and computation resources 12550.
The configuration facility 12506 may include advisors 12514, which may include one or more wizards, tools, algorithms, recommenders, configuration elements, questioners, and the like. Advisors may be used to receive data and/or define or develop space definitions 12516.
Space definitions 12516 may include aspects of site resource criteria space 12610 (
Space definitions 12516 may include aspects of site resource space 12612 (
Space definitions 12516 may include aspects of site selection resource scenario space 12614 (
Space definitions 12516 may include aspects of site resource performance space 12616 (
The configuration facility 12506 may include a combinations component 12518. The combinations component 12518 may automatically or semi-automatically define the resource criteria design and/or resource scenario space that may be evaluated by the platform 12504.
The simulation facility 12510 of the platform 12504 may, based on the space definitions from the configuration facility 12506, evaluate the site selections. The simulation facility 12510 may include models 12526. As used herein with respect to site selection, a model includes the combination of parameters and the values that describe a site selection and/or corresponding clinical trial designs and the scenario under which the site selection is evaluated with respect to resource availability. Models 12526 may include hundreds or even thousands of models. Models 12526 may include deviation specifications for one or more of the parameters of the models. A deviation specification may define a range of values, a distribution of values, and/or a function of values for one or more parameters of a model. The deviation specifications may be based on expected or previously measured distributions or variations in clinical trial design parameters, site selection parameters, and/or resource availability parameters.
The simulation facility 12510 may include engines 12528. As used herein, engines may relate to the codification of a site selection and/or corresponding resource availabilities that can receive model parameters and run a simulation to generate an output. The output of the engines 12528 may be a predicted behavior, e.g., resource availability, for a site selection for one or more corresponding clinical trial designs, one or more scenarios, and/or conditions. Engines 12528 may evaluate a site selection with analytical methods, mathematical methods, numerical methods, simulation, and/or the like. Evaluating a site selection may include a simulation run to determine performance of the site selection. Evaluating a site selection may include using a Monte Carlo approach to simulate a site selection for different values according to the deviation specifications and using statistical methods to determine the performance of the site selection from a simulation run.
The simulation facility 12510 may include search/exploration component 12530. The search/exploration component may facilitate modification of model parameters for simulation. The search/exploration component 12530 may adaptively modify or generate models for simulations based on simulation results of other models/site selections and/or based on triggers and data from other facilities of the platform 12504.
The analysis facility 12508 may be configured to analyze simulation results of site selections. The analysis facility 12508 may include a filtering component 12520. The filtering component 12520 may be configured to use one or more numerical and/or analytical methods to evaluate and compare the performance of evaluated site selections. The filtering component may identify optimal or near-optimal site selections for one or more performance parameters. The filtering component may search the performance space and identify a set of optimal and/or near optimal site selections for one or more performance parameters, e.g., availability of resources.
The analysis facility 12508 may include a recommendation component 12522. The recommendation component 12522 may provide site selection recommendations. The site selection recommendations may be based on optimal or near-optimal site selections determined by the filtering component 12520. Recommendations may be adaptive based on settings, feedback, selections, triggers, and the like from the user, and/or other facilities in the platform 12504.
The analysis facility 12508 may include an augmenting component, 12524. The augmenting component may supplement simulation results with real-world data.
The interfaces facility 12512 may be configured to provide visualizations and interfaces for comparing, searching, and evaluating simulated site selections. Visualization component 12532 may provide for one or more interfaces to visualize the performance of site selections and facilitate comparison of site selections by a user. The feedback analysis component 12534 may track user actions associated with the interfaces and visualizations to determine patterns and/or preferences for site selections. The tradeoff advisor component 12536 may analyze and provide data and guidance for evaluating tradeoffs between two more site selections.
The platform 12504 may include and/or provide access to one or more data facilities 12538. Data in the data facilities may include design histories 12540, simulation data 12542, site data 12544, resource data 12546, population data 12548, and the like.
The stages of the process may include an evaluate stage 12604. The evaluate stage 12604 may configure models 12618 for evaluation using simulation 12620 and analytical methods 12624. The stage may include various methods of enhancing computation and simulation using parallelization and resource management 12622.
The stages of the process may include an augment stage 12606. The augment stage 12606 may add real-world data to the simulation data. Financial data 12626, regulatory data 12628, revenue data 12630, and the like may be added to the and used to augment data from simulations.
The stages of the process may include an explore and analyze stage 12608. The explore and analyze stage 12608 may include filtering methods and algorithms 12632 for identifying optimal site selections. The stage may include generating and interacting with visualizations 12634 and tradeoff analysis tools 12636 to compare and select site selections.
In embodiments, the platform 12504 (
In embodiments, an optimum site selection is a site selection that achieves most desirable values for two or more specific site resource performance parameters. In the case of optimality for multiple site resource performance parameters, optimality may require a tradeoff between the parameter values. For example, a site selection that has a lower risk of drug supply interruption may have a low NPV and therefore may not be desirable. The optimality of a site selection may be based on a function of site resource performance parameters. In some cases, a function may be a weighted sum of the site resource performance parameters. A function, or a set of functions, may be used to generate an overall score (or a set of scores) and the score may be used to determine the optimality of the site selection. A highest score, a specific score, lowest score, and the like may be considered optimal depending on the function used to compute the score.
In embodiments, optimality may be evaluated according to Pareto optimality. Pareto optimal site selections may be site selections where no individual site resource performance parameter can be better off without making at least one other individual site resource performance parameter worse off. In some cases, optimality may be determined using convex hull analysis.
In some cases, one site selection may be globally optimum. In some cases, more than one site selection may be globally optimum. In some cases, no site selections may be globally optimum. In some embodiments, optimality of site selection may be relative to a benchmark. A known site selection, a set of historical site selections, and/or the like may be used as a benchmark. Site selections may be considered optimal if they meet, exceed, and/or are within a threshold distance of the benchmark site resource performance parameters.
Site resource performance parameters that may be used to determine site selection optimality may be user defined, system defined, algorithmically defined, and/or the like. In some cases, users may specify a subset of site resource performance parameters that should be used to identify optimal site selections. A user may define optimality criteria by defining ranges, values, characteristics, and the like of the parameter values that may be considered desirable and/or optimal. Interactive graphical interfaces may be provided to a user to evaluate different site selections based on one or more optimality criteria. Interactive interfaces may allow a user to explore different site selections by changing scoring methods, weights associated with the criteria, and the like.
In embodiments, the characteristics of site resource performance parameters for evaluated site selections may be analyzed by the platform to determine if any of the parameters may be less important for optimality. For example, analysis may include evaluation of ranges, variability, and other statistical analysis. If one or more site resource performance parameters for all evaluated site selections is within a desirable range, or the site resource performance parameter is almost equal for all of the evaluated site selections, the site resource performance parameter may be removed and identified as less significant for optimality and, in some cases, may not be factored in when determining optimality. Prior to determining optimality based on site resource performance parameters, the site resource performance parameters and the values of the site resource performance parameters may be grouped, filtered, normalized, and the like.
Optimality of site selections may be redefined automatically, semi-automatically, in response to user input, and/or the like. The criteria for optimality of site selections may change as site selections are evaluated by the platform. For example, initial optimality criteria may produce no optimal site selections. In response to no optimal site selections being determined, the criteria may be changed (relaxed, increased, decreased, etc.) until at least one site selection is considered optimal. In another example, optimality criteria may change in response to user feedback. Users may evaluate initial site selections found to be optimal and provide feedback (direct feedback and/or indirect feedback that can be derived from user actions and inactions). The feedback from the user may be used to change how optimality is determined, which site resource performance parameters are used to determine optimality, the values of the site resource performance parameters that are considered optimal, and/or the like.
In some embodiments, site resource performance parameters may be grouped, ordered, and/or organized into one or more hierarchies, groups, and/or sets. Two or more different optimality criteria may be used in parallel to determine multiple sets of optimal site selections under different criteria. Two or more different optimality criteria may be used sequentially to determine optimal site selections. One criteria may first be used to identify a first set of optimal site selections under first criteria. A second set of criteria may then be used on the first set to reduce the set of optimal site selections.
In embodiments, a site selection may be globally optimum if the site selection is optimal with respect to all possible site selection options. In embodiments, a site selection may be globally optimum if the site selection is optimal with respect to possible site selection options for one or more criteria. In embodiments, a site selection may be globally optimum if the site selection is optimal with respect to a large percentage (such as 80% or more) of possible site selection options for one or more criteria. In embodiments, a site selection may be globally optimum if the optimality of the site selection is within a high confidence level (90% confidence) with respect to possible site selection options for one or more criteria.
Traditional methods for evaluating site selections cannot determine global optimum site selections since they evaluate one, several, or a small subset of site selection options. Traditional methods do not consider all or almost all of the site selection options and cannot find a global optimum.
Trial site selection may involve numerous variables, parameters, considerations, tradeoffs, and the like resulting in a very large number of possible variations. A large number of possible variations makes study site selections and optimization using traditional methods difficult. In many cases, traditional methods may fail to explore or consider the complete space of possible site selection options and may miss or never consider globally optimal site selections. Using traditional methods, the number of site selection variations that may be explored in a reasonable time is limited. In some cases, only one (1) statistical site selection and only three (3) clinical scenarios may be evaluated. The best site selection study of the limited number of variations may not result in a globally optimal site selection. A locally optimum site selection chosen from a limited number of considered site selections may represent one (1) local maximum but may be far from the globally optimum site selection. When 10,000 or more clinical scenarios are considered, a globally optimum site selection may be distinguished from the many locally optimum site selections. However, consideration of 10,000 clinical scenarios cannot be practically performed using traditional methods as it would require an estimated 50,000 hours or more to complete.
In embodiments, the platform and methods described herein may evaluate thousands or even millions of site selection options enabling a determination of a global optimum site selection with respect to availability of resources for a clinical trial. In many cases, the globally optimum site selection may have significant advantages over locally optimum site selection. In one example, a globally optimum site selection may require less time to complete than other site selections.
In embodiments optimization of trial site selections for resource availability may occur sequentially after optimization of trial design. In one embodiment, a globally optimum trial design may be determined using the techniques described herein. After the globally optimum trial design is determined a globally optimum trial site selection for resource availability may be determined for the determined trial.
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In an embodiment, a method for guiding a user through configuring a site grouping/selection system/platform for optimizing site selection for resource availability for a clinical trial is provided. The method includes generating an interactive interface. The method further includes presenting, via the interactive interface, a plurality of prompts to a user structured to configure a site selection system 12504 for determining which subgrouping, of a plurality of possible sites for recruiting patients from for a clinical trial, globally optimizes a desired resource criteria, e.g., one or more parameters within resource criteria space 12610. The method further includes for each of the plurality of prompts, receiving a responsive user input, and configuring the site selection system based at least in part on the responsive user inputs.
In another embodiment, a system for guiding a user through configuring a site grouping/selection system/platform for optimizing site selection for resource availability for a clinical trial is provided. The system includes a server structured to determine which subgrouping of a plurality of possible sites for recruiting patients from for a clinical trial globally optimizes a desired resource criteria. The system further includes an electronic device, e.g., 12502, structured to: display an interactive interface that presents a plurality of prompts to a user for configuring the server; for each of the plurality of prompts, receive a responsive user input; and configure the server based at least in part on the responsive user inputs.
In another embodiment, a non-transitory computer readable medium storing instructions is provided. The stored instructions, when loaded into at least one processor, adapt the at least one processor to: generate an interactive interface; and present, via the interactive interface, a plurality of prompts to a user. The plurality of prompts are structured to configure a site selection system for determining which subgrouping, of a plurality of possible sites for recruiting patients from for a clinical trial, globally optimizes a desired resource criteria. The stored instructions further adapt the at least one processor to, for reach of the plurality of prompts, receive a responsive user input; and configure the site selection system based at least in part on the responsive user inputs.
Embodiments of the current disclosure may provide for prediction of an initial site grouping/selection with respect to resource availability of a clinical trial. In embodiments, the initial site selection may be structured to maximize (globally optimize) access to clinical trial resources and/or other criteria, e.g., one or more parameters within resource criteria space 12610, site resource space 12612, resource scenario space 12614, and/or site resource performance space 12616. For example, in embodiments, a predicted initial site selection may correspond to minimizing interruptions in supply of a drug used in the clinical trial. In other embodiments, the predicted initial site selection may correspond to maximizing the number of administrative personnel or healthcare providers available to conduct the clinical trial. In yet other embodiments, the predicted initial site selection may correspond to maximizing the availability of medical equipment used in the clinical trial.
In embodiments, the initial site selection may be based at least in part on historical data. The historical data may include data from previously conducted clinical trials and/or it may include data from prior simulated clinical trials. In embodiments, the data may be stored in data facility 12538 and/or be generated by the simulation component 12510 and/or the analysis components 12508.
The prediction may be generated prior to receiving user input or after receiving some user input e.g., via user device 12502. The predicted initial site grouping/selection may be displayed in a graphical user interface, e.g., interface component 12512, for adjustment by a user. The predicted initial site grouping/selection may be the grouping/selection actually used in the clinical trial, or it may serve as a starting point which the user can configure/tweak as desired. The predicted initial site grouping/selection may be the global optimal, with respect to the desired resource; or it may be close to the global optimal, wherein a user can tweak, i.e., make adjustments, it to be the global optimal. The initial prediction may reduce the amount of time to find the global optimum by providing the user (or computer) with a good starting point based on knowledge gained from historical data. Simulated annealing, e.g., via the search/exploration modules/engines 12530, may be applied to the initial prediction to test the surrounding subgroupings. Artificial intelligence may be used to analyze the historical data based on known desired criteria for the clinical trial. For example, in embodiments, a neural network may be trained on historical data to identify patterns in site selections that result in particular values for the availability of a resource at one or more sites. The neural network may then process site selection data, i.e., data regarding possible sites for a clinical trial, and then generate a predicted initial site selection.
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Embodiments of the current disclosure may also provide for a method for using the initial site selection. The method may include receiving an initial site selection for a clinical trial, and conducting a clinical trial based as least in part on the initial site selection. The initial site selection may correspond to a global optimization of access to one or more resources for the clinical trial, wherein the initial site selection was predicted from past trial site selection data. For example, a first entity may generate initial site selection data and send it to a second entity that conducts a clinical trial based at least on part on the initial site selection data.
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Exploration/evaluation of the spaces may provide insights to a user regarding known and/or unknown constraints on site selection and/or the impact a particular selection parameter, e.g., a parameter within one of the spaces, may have on resource availability.
Exploration of the spaces may be facilitated via visualizations of the spaces. The visualizations may include, and/or be based at least in part on, heatmaps and/or tornado graphs. The interface 14110 may include a canvas area 14112 for rendering (or rasterizing) the visualizations.
The interface 14110 may provide for users to adjust one or more selection parameters and/or adjust sites within one or more proposed site selections/groupings and see the effect on the predicted resource availability. Adjustment of the selection parameters may be facilitated by one or more interactive widgets 14114, e.g., text boxes, buttons, sliders, and/or the like. In embodiments, adjustment of the selection parameters may be facilitated via the canvas 14112. In embodiments, the interface 14110 may allow users to evaluate and compare possible site selections/groupings side-by-side.
In embodiments, exploration of the spaces may provide for sensitivity analysis. For example, embodiments of the interface 14110 may incorporate simulated annealing engines, as described herein.
In embodiments, platform/system 14100 may include a server, e.g. server 12554 in the computation resources 12550 of platform 12504. The server 12554 may generate the interface 14110 as a web application, remote desktop, and/or other suitable architecture for providing the interface 14110 to users and/or user devices 12502.
The platform 14100 may support collaboration among different users. For example, the server 12554 may generate multiple interfaces 14110, 14116, and 14118. In embodiments, the interfaces 14110, 14116, and 14118 may be configured/tailored to different types of user/target audience, e.g., users with different levels of experience and/or knowledge with respect to evaluating site groupings/selection for various criteria. For example, a first interface 14110 for an expert user may have more functionality, e.g., access to more options and/or features, than a second interface 14116 for a novice user.
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Accordingly, the method 14400 includes obtaining a first simulation output for a first set of site selections for a clinical trial based on the availability of resources 14410. The first simulation output includes first resource availability, as disclosed herein, associated with each site in the first set of site selections. The method 14400 further includes determining a first resource availability 14412. The method 14400 further includes determining, within the first set of site selections, a first globally optimum site selection based at least in part on the availability of resources 14414. Optimum site selections may be determined using one or more of Pareto analysis, convex hull analysis, and/or simulated annealing analysis. The site selection may then be configured based at least in part on the first globally optimum site selection, e.g., the site selection may be made to conform to the globally optimum site selection.
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After the start 14418 of the clinical trial, but before the stop 14420, the globally optimum site selection may be reassessed in view of changes to availability of resources. As such, the method 14400 includes obtaining, during conduction of the clinical trial, a second simulation output for a second set of site selections for the clinical trial based on a second resource availability 14422. The second simulation output includes second site selection performance parameters associated with each design in the second set of site selections for a second set of site selection criteria. In embodiments, the second simulation output may be different than the first simulation output. For example, the second simulation output may be from another evaluation of the site selections according to a second resource availability. In embodiments, the second simulation output may be the same as the first simulation output. For example, the first simulation output may be reused. In embodiments, the second site selection performance parameters may be different than the first site selection performance parameters. For example, the second site selection performance parameters may include more or fewer parameters than the first site selection performance parameters. In embodiments, the second site selection performance parameters may be the same as the first site selection performance parameters. In embodiments, the second set of site selections may be the same or different than the first set of site selections. For example, the second set of site selections may include additional sites selections and/or have removed site selections as compared to the first set of site selections. In embodiments, the second set of site selection criteria may be the same or different than the first set of site selection criteria. For example, availability of a resource such as a drug for the clinical trial and/or site selections may have changed since the start 14418.
The method 14400 further includes determining, within the second set of site selections, a second globally optimum site selection 14426. Determination of the second globally optimum site selection may be based at least in part on the second resource availability 1424. The method 14400 may further include adjusting the site selection based at least in part on the second globally optimum site selection 14428. Adjustment of the site selection may include conforming the site selection to the second globally optimum site selection.
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In embodiments, one or more of the services may interact with other services and interact with the compute component 14638. The compute component 14638 may include components for executing simulations. The compute component may include one or more components that provide the functionality of the simulation facility 110 of the configuration of the platform shown in
In embodiments, the platform 14606 may include one or more cloud services 14616 provided by one or more cloud providers. Cloud services may include code management services 14652, deployment pipeline services 14654, container services 14656, and the like. In embodiments, one or more monitors 14620 may monitor the operation of the platform 14606 and identify errors, faulty components, completions of operations or processing and the like. The monitors 14620 may cause alerts or other notifications for the browser app 14604. In some embodiments, the platform 14606 may include an application insights 14622 module which may provide performance monitoring and management of applications and components associated with the platform 14606.
In embodiments, elements of the platform may include a quantum computer. In embodiments, one or more algorithms and/or methods described herein may be implemented using a quantum computer that may be executing a quantum algorithm. A quantum computer may be a computer that is based on quantum mechanical phenomena such as superposition and entanglement to perform operations on data. A computing system may include a hybrid system that includes a quantum computer and a classical computer. The methods and systems described herein may be deployed such that they are distributed among the classical and quantum computers. A quantum computer may execute one or more quantum algorithms for solving one or more quantum computing tasks, and a classical computer may execute one or more classical algorithms for solving one or more classical computing tasks. In embodiments, parts of the platform may use quantum computing and quantum algorithms to speed up computations for algorithms or parts of algorithms that are difficult for classical computers. In some embodiments, algorithms for quantum search, quantum simulation, quantum annealing, and the like may be used in parts of the platform for implementing aspects of the methods and systems described herein.
In embodiments, one or more algorithms and/or methods described herein may be implemented with artificial intelligence algorithms such as machine learning algorithms and neural network algorithms Artificial intelligence algorithms may be used to build mathematical models based on training data to make predictions or decisions. In embodiments, training data may include any one or subset of: interface interactions, simulated annealing inputs and results, pareto analysis inputs and results, convex hull analysis inputs and results, recommendation algorithm inputs and results, orchestrating algorithm inputs and results, design advisor inputs and trade-off advisor inputs and outputs, and other data received or determined by the platform described herein. In embodiments artificial intelligence may include supervised machine learning, unsupervised machine learning, reinforcement machine learning, and the like. In embodiments artificial intelligence algorithms may be used to identify design optimality, identify optimal designs, identify analysis flow and methods to reduce computation and analysis time, and the like.
In embodiments, the system and methods described herein may be include one or more computing resources such as a cloud computing service. The cloud computing service may provide on demand availability of computer system resources. Computing and/or storage resources may be allocated based on demand, cost, timing requirements, and the like. The computing resources may be distributed across multiple locations. Computing resources may be allocated on demand during operation of the platform. Different stages of operation may require different computing resources. Simulations, for example, may require an increase in computing and storage resources. The amount, locations, and the like of the computing resources may be selected based on timing and cost considerations. High priority design studies may be allocated more resources for example. In embodiments, cloud computing may be used for platform and functions to optimize trial design, site selection, and/or clinical trial resources.
In embodiments, the system and methods described herein may utilize one or more external data sources. External data sources may include databases of data, federated data sources, government data, real-time data, and the like. In some cases, external data sources may be queried for data from a single source. In some cases, external data may require data harvesting from multiple locations or resources using one or more crawlers, queries, bots, and the like. For example, financial data used for augmenting data in the platform described herein may require querying or multiple resources to determine current costs for sites, doctors, drugs, and the like. External data sources may be updated using data calculated, compiled, or determined by the platform or parts of the platform. Data may be written to multiple locations while using one or more write-back methods to maintain data coherency.
In embodiments, the system and methods described herein may include authentication and/or provide conditional access. The platform, resources associated with the platform, and the like may require establishing and confirming identities of entities that interact with the platform and associated resources thereof. Entities may be persons and/or other resources. Identities may be associated with account and may track usage for billing and accounting. Identities may be associated with access or capabilities restrictions. Some aspects of the platform may be enabled for some entities associate with specific accounts based on subscription level. Conditional access may be provided to specific algorithms, models, engines, data, analysis interfaces, and the like. Data and communications may be secured with one or more encryption and data security methods for maintaining data security and confidentiality.
In embodiments, the system and methods described herein may include metadata. Metadata may include descriptive metadata, structural metadata, administrative metadata, reference metadata, and/or statistical metadata. Metadata may be associated with stored data, data as it progresses through the platform, elements of the platform (for example elements that may self-identify and register to the platform). Metadata may be associated with major data structures and elements of the system. Metadata may be associated with and/or accompany data related to the design space, criteria space, performance space and the like. The metadata may provide information about where the data originated, who or what created the data, when the data was created, assumptions and limitations of the data and the like. For example, simulated data may include metadata that relates to the engines and algorithms that were used for the computations. The metadata may identify what version of engines, what random number seeds were used, known limitations and compatibility of the engines and data generated by the engines with other engines and data produced by other engines.
In embodiments, the system and methods described herein may include reporting functionality. Reporting may include charts, spreadsheets and other tools used to present the results of the optimization process and/or the data fed into the optimization process. Reporting may include heat maps and tornado graphs. Reporting may be generated for user review and analysis. In some cases reporting may be generated for machine analysis. User report and machine reports may include different formatting and amounts of data. Reporting may be system initiated or user initiated. In some cases reporting may be triggered by an event, such as in an analysis. Reporting may include data and documentation for audit or methods, procedures, and the like used by the platform and parts thereof. Reporting may be necessary for compliance and regulatory approval.
In embodiments, the system and methods described herein include integrations with one or more databases, third party systems, sources of data, marketplaces, computational resources, and the like.
In embodiments, the systems, methods, and platform described herein may include aspects of application programming interfaces (APIs). APIs may include software interfaces that provide for communications between various components of the overarching clinical trial framework, e.g., backend servers, frontend graphical user interfaces, querying of historical data, available resource data, and the like. APIs may be exposed (such as software hooks) for expanding, controlling, and/or modifying functionality of the platform. APIs may include libraries and frameworks for interacting and integrating third party simulation and analysis systems. Third party simulation engines may consume platform APIs to control or use system resources. In embodiments, the systems, methods, and platform described herein may consume APIs of external or internal software and systems.
In embodiments, the system and methods described herein may include alerts. The platform or components thereof may include components for generation and transmission of data messages to an end user (human or machine). Alerts may be generated for notifying an end user of analysis results, status of processes (such as simulation, analysis, configuration, and the like), errors (delays in processing, unavailability of platform or external resources, unauthorized access, and the like), time of completions of simulations and/or analysis, and the like. Alerts may be logged for system audit and used for predictions. Alerts may be pushed or pulled to user devices, such as mobile devices and may wake a device from a sleep or low power mode. Alerts may be provided to other platform elements which may be used as a trigger to initiate and/or abort other processes of the platform. For example, simulated annealing analysis may provide alerts when improved designs are observed. The alerts may be provided to a user and used to trigger an update of interfaces that display analyzed designs.
In embodiments, the system and methods described herein may include collaboration features. Collaboration may include collaboration among users. Components of the various interfaces may provide for users to collaborate with respect to trial design and/or site selection. Collaboration may include: messaging/commenting systems, screen sharing, and/or platforms that merge various elements that are created/edited by different users. Users may be able to post, view, edit and/or download simulation results. Collaboration may include collaboration across sites. Users at different locations may use and collaborate with the same system. Collaboration may include collaboration across time. Settings, analysis, results, and the like may be saved and modified by different users at different times. Changing settings from analysis performed in the past may automatically trigger analysis based on new setting and a comparison against previous results.
In embodiments, the systems and methods described herein may include design and optimization or various clinical trial types and may include: parallel group design, cluster randomized design, crossover design, titration design, enrichment design, group sequential design, placebo-challenging design, blinder reader designs, single-stage up-and-down phase 1 design, two-stage up-and-down phase 1 design, continual reassessment method phase 1 design, optimal/flexible multiple-stage designs, randomized phase II designs, dose-escalating design, biomarker-adaptive design, adaptive randomization design, pick the winner design.
In embodiments, the system and methods described herein may include trial design and optimization for different phases of trials. In embodiments, different phases of trials (such as preclinical, phase 0, phase 1, phase 2, phase 3, phase 4) may use different considerations and, in some cases, use different simulation engines, analysis algorithms, interfaces, wizards, and the like. In embodiments, the scenario space, design space, criteria space, and/or performance space may be modified or different based on the phase of the trial and/or type of trial.
In embodiments, the systems and methods described herein may include consideration and analysis of trial resources. Trial resources may include resources to prepare, conduct, and evaluate a clinical trial. Examples include drugs/drug supply subject to the trial, devices subject to the trial, and/or administrative personnel and/or equipment needed to administer a procedure/drug/device subject to the trial. Resources may include test equipment to analyze and certify results. Availability, cost, time for acquisition and the like of resources may be a factor in performance space, design space, scenario space, and/or criteria space during design and evaluation of clinical trials.
Computational resources (such as servers and cloud services) used for simulation or analysis during trial design may operate in batch mode or may operate with a time delay between when the resources are requested and when they are available for use. Batch mode and a time delay may reduce responsiveness of an interactive design simulation. In embodiments, a platform may predict when a request for computation resources should be issued such that they are available when needed. Triggers, such as progress in the interface, time of day, amount of data entered, meeting schedules, and the like may be used to predict when simulations or analysis will be ready for execution or computation. In embodiments, machine learning models may be used to predict when computational resources should be requested such that they are ready when simulations are ready for execution. Models may use historical data. Computation resources may be requested ahead of time before they are needed in anticipation of a future request.
In embodiments, the size of a batch of computation (which may be correlated with the time of computation) may be sized based on predicted computational requirements for the project. Predictions may be based on history of similar projects, users, and the like. In embodiments, the size of a batch may be related to when computation resources are expected to be available, a prediction of when simulations or analysis will be ready for execution or computation and how long the execution or computation is expected to take.
In embodiments, the prediction engine may determine when resources should be allocated or determine progress triggers for allocation based on historical data of design progress and time of resource request. In embodiments, one or more machine learning models may be trained on the historical data to train the model to predict when resources will be needed. The prediction when the resources will be needed may then be used to request resources ahead of when they are needed according to the time delay associated with each resource. In some embodiments, additional data such as calendar data, meeting data, and the like may be used to make or supplement the prediction process. Meeting data may indicate that resources may be required for computation during the meeting.
In embodiments a prediction engine may determine triggers such as a specific location in the interface that indicate that the study is almost ready for simulation and resources should be requested. Triggers may include when specific data is entered, when one or more locations in the interface progression are reached, and the like.
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In embodiments, computing resources may be allocated in anticipation of collaborative sessions for trial design. For example, embodiments of the current disclosure may detect that one or more users are in, or are about to enter, a collaborative session and spool computing resources. The spooling of computing resources may be based on one or more aspects of the platforms, disclosed herein, that the users are likely to use. In embodiments, where it is detected that one or more uses are about to enter a collaborative session with interactive interfaces, as described herein, one or more computationally expensive but highly interactive interfaces may be spooled up to improve overall responsiveness of the interfaces to the users.
In certain aspects, allocating of resources may be based on one or more triggers, e.g., a user location in an interface, embodiments of the platform may provide an alert and/or message dialogue box to a user confirming that the user's wishes to proceed with the allocation.
Embodiments of the current disclosure may provide for a score for comparing simulated designs. The score may be a proxy or an indicator of metrics that may not be directly determined from available or simulated data. The score may be used as a guide to identify interesting or valuable designs during design analysis or exploration. The score may be used as an initial design ranking score. As will be understood, embodiments of the analysis facility 108 (
The comparison score may be a score based on one or more score components. The score may be a function of one or more score components. Score components may include one or more simulated, predicted, and/or calculated performance metrics of a design such as cost, time to completion, success, and the like. Score components may include one or more elements of the design space such as properties of a design that are not dependent on simulation and may be related to the type of a design and/or specified by a user. For example, score components may include aspects of design type, dose of drug, frequency of drug, maximum duration, patient inclusion/exclusion criteria, randomization type, and the like.
The score may be computed based on a weighted sum or other function of a plurality of score components. Score components and/or functions for a score may be configured by a user. A user may configure a score via one or more interfaces or may provide a specification by other means (such as via a specification or configuration file that is accessible by the platform). A user (using an interface, specification files, etc.) may specify or select one or more score components for computing the score, the function used to compute the score, weighting of score components, normalization of score component values, and the like. In some cases, a set of preconfigured scores that have preconfigured score components, weights, functions, and the like may be selected from a list of predefined scores.
In some cases, score configuration may include an input or a specification of the type of score the user would like to compute. The type may include that the score is a proxy score for NPV, duration, robustness, and the like. Each of the types may be associated with a set of score components. Based on the selection of type and the associated score components for each type, the platform may identify a list of available score components that are related to a computation of the type of score selected. In some cases, not all score components associated with the type of score selected may be available in the simulated data. The available score components for the selected score type may be automatically used to compute the score. In some cases, the available score components may be presented to a user and the user selects one or more of the score components for inclusion in the score.
In some cases, the score components may be normalized or transformed before the score component is used in the computation of a score. Score components may be normalized according to the type of data (i.e. Boolean, integer, float, string, etc.), number of possible values (i.e. a set of possible values, continuous values), range of values (i.e. difference between maximum and minimum values in the simulation data), and the like. For example, score components that are of a string data type may be normalized to an integer value wherein each string is represented by a different integer value. In another example, score components that are of a string data type may be normalized to a value between 0 and 1. In another example, score component values that are larger than 1 or less than 0 may be normalized such that each score component value is within the range between 0 and 1. Normalization may be configured such that the maximum value of a score component is normalized to the value 1, the minimum value of a score component is normalized to a value of 0, and all other values of the score component are normalized to a value between 0 and 1 where the normalized value is based on how far the value was from the maximum. For example, a score component x may be normalized to a score component x′ according to x′=(x−xmin)/(xmax−xmin). In embodiments, normalization may include normalization techniques that include and/or are based on linear scaling, clipping, log-scaling, z-score, and the like. In embodiments, normalization may include normalization techniques including substitution, rounding, mapping, and the like. In some cases, normalization techniques that normalize each score component value to a value between 0 and 1 may be preferable as they can be easier to manipulate and compare numerically.
A score may be a function of one or more score component values. In one embodiment, a score may be a sum of the values of a plurality of score components. In another embodiment, a score may be a sum of the normalized values of a plurality of score components. In yet another embodiment, a score may be a weighted sum of the normalized values of a plurality of score components. For example, a score s1 for a design may be computed as a weighted sum of the normalized score components c1, c1, . . . , cn according to s1=w1c1+w2c1+ . . . +wncn wherein w1, w1, . . . , wn are weighting values associated with each normalized score component. The weights associated with each score component for the computation of the score may be based on relative importance of the score component. Score components that are more important for a score may be multiplied by a larger weighting value.
A score may be computed for each simulated design. In some cases a plurality of scores based on different score components, functions, weights, and the like may be computed for each simulated design. The score may be used to filter designs such that only designs that are larger than the score, lower than the score, between some values, and/or the like are shown. The score may be used to rank or order designs such that designs with the highest score are shown first to a user.
In embodiments, the score may be computed before simulation (a score that is not based on simulation results), during simulation (scores may be computed using one or more simulated score components in real time as simulation results are obtained), and/or after simulation.
In embodiments, a score computed using normalized score component values may be a relative score. The score may provide a relative value of a design with respect to other designs that are computed according to the same normalization. In some cases, scores may not be absolute and scores from different simulation runs may not be comparable. For example, if a score is normalized with respect to the minimum and maximum score component values of a simulation, the score will not be comparable with a score from a different simulation that has different minimum and maximum score component values.
In some cases, score values may be stored or associated with the data used to determine the score. A score may be associated or stored with data that identifies which score components were used to compute the score, the values of the score components, the function for computing the score, the normalize score components, normalization function, and/or the like. The associated data may be a vector or array of data that is stored or associated with each score or simulation run and may be used to determine if scores from different simulation runs are comparable. The associated score data from two different simulation runs for different designs may be compared to determine if the scores are based on the same score function, normalization function, score components, and the like to determine if they can be used to accurately compare designs from different simulations. In some cases, when the scores from different simulation runs are identified as not comparable based on the comparison of the associated data, the mismatch between the associated data may be identified. In some cases, the mismatch between the data may be used to identify functions or methods to recalculate or modify one or more of the scores to make the scores comparable.
For example, one set of scores for designs simulated in a first simulation run may be based on the same score function, score components, and normalization functions for the score component values as a second set of scores for designs in a second simulation run. The first set of scores and the second of scores may still not be comparable since the minimum and/or maximum values of the score components for the first simulation run and the second simulation may be different which may result in a different normalization of values (such as when the normalization is based on the minimum and maximum values as described herein). In one example, identification of the minimum and maximum values for the score components for each simulation run may allow a modification of the scores such that they are based on the minimum and maximum scores of the two simulation runs. In embodiments, the associated data for scores from two or more simulation runs may be compared. The platform may determine if the scores are comparable. If they are not comparable the platform may determine if the associated data includes enough information to transform or renormalize the score component values such that they are comparable.
The scoring engine component 14908 may include a simulation data analysis component 14912 that may identify score components that are used for computing a score and may determine if and how they should be normalized. The simulation data analysis component 14912 may analyze the range of the data, data type, number of values, and the like to identify the normalization operations for the score components. The normalization component 14910 may be configured to perform normalization operations on the score component values from the simulation data according to the results of the simulation data analysis 14912 component. The normalization component 14910 may perform any number of normalization functions including, substitution, mapping, rounding, clipping, and the like. The calculation module 14914 of the scoring engine 14908 may determine one or more scores of the designs according to the score definition 14920 and normalized data from the normalization component 14910. The score and associated data 14918 may be stored in a database that is local to the scoring engine 14908, in other parts of the platform 104 or external to the platform. The score and associated data 14918 may include the score, score definitions used to determine the score, normalization functions used to normalize values of the score components, results of simulation data analysis (such as min and max values), and/or the like.
The scoring engine component 14908 may further include a comparison component 14916. The comparison component 14916 may be configured to receive score and associated data 14918 from one or more simulation runs and determine if the scores are comparable. Scores may be comparable if the scores are based on the same score definitions, calculations, normalization functions, and the like. The comparison component 14916 may compare the scores and associated data from one or more simulation runs and determine if the scores may be modified to make them comparable. In embodiments, the comparison component 14916 may identify differences in the associated data (such as differences in normalization functions) and determine how one or more of the scores or score components may be modified or mapped to new values to make scores comparable. In some cases, the comparison component 14916 may cause one or more of the calculation components 14914, normalization components 14910, and/or simulation data components 14912 to recalculate or modify the score based on the determined differences in the associated data between scores.
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In embodiments, the platform may be configured for collaboration. Collaboration features may be enabled via one or more methods and/or interfaces for design specification, filtering, and selection. Collaboration features may be configured to allow multiple users to work together to determine, develop, analyze, and/or select a trial design. In some embodiments interfaces and methods may be configured such that multiple users may view and interact with design and analysis tools for group evaluation of simulated designs. Collaboration features may be used to facilitate collaboration between users at different locations (or simply users that use separate computers and interfaces) and/or users that are at one location and can view the same interface. Collaboration may occur in one or more collaboration sessions. Collaboration sessions may include sessions where multiple users work on different or the same tasks concurrently. Collaboration sessions may include sessions where multiple users work and collaborate on different tasks sequentially. Collaboration sessions may occur in a continuous time block or may include two or more disjoint or asynchronous time blocks that may occur at different times of the day, different days, and the like.
In some embodiments, a collaboration session may include one or more users collaborating in real time. A real-time collaboration session may include a session in which multiple users may work together to reach a consensus on one or more aspects of a trial design. The real-time collaboration session may include a session in which users may work together to evaluate and select one or more trial designs based on evaluation of simulated trial designs. The real-time collaboration session may include a session in which users may work together to specify design and evaluation parameters for a simulation for a trial.
During a collaboration session, the interface may step through one or more tasks for accomplishing the goals of the session. Tasks may be associated with a sequence of different graphical interfaces, a sequence of computations, and/or a combination thereof. The sequences of interfaces and/or computations may be at least partially preconfigured providing for a framework of sequences for accomplishing a task. The framework of sequences may include divergent or a tree like framework allowing users to tailor or dynamically change the sequences based on decisions made during the session, results from previous operations, and the like.
For example, in one case, a goal of a collaboration session may include selection of one or more trial designs from a set of simulated trial designs. Based on the specified goal, a platform may load or determine a proposed starting point for the session (such as which interface to show) and what interfaces may be shown and/or computations may be performed as a result of selections or actions in the first interface. As an example, the starting point for the session in this example may be a list of top or optimum design as determined from the simulated data using convex hull analysis. The interface may show the top designs along with their parameters. The top designs may be shown with options for selection, further analysis, comparison, and the like. Based on the selections the sequence may be configured to provide additional analysis or comparison of the top designs or provide additional suggested designs (such as twins or siblings of the top designs). The design may further be compared against one another or against the space of all available designs (such as using heatmaps, tornado diagrams, and the like). In one example, the general sequence for the session may include design selection, design comparison, evaluation of twin designs, a drill down of performance parameters, and the like. The sequence of interfaces may be configured to ensure the top designs are considered, as well as alternative designs that are close to selected designs are considered during the session.
In another example, a sequence of interfaces and/or computations in a session may be configured to surface, in real time, similar designs such as twins, siblings, Pareto designs, and the like to one or more selected or top designs. A user or a group of users may be guided to explore/consider a range of different design types and/or design parameters. Design alternatives (such as different design types, siblings, twins, etc. that may have similar performance to selected designs) may be automatically identified (such as by using one or more Pareto, Convex Hull, and other algorithms) and provided for consideration. Parameters of the alternative design that complement or diverge from previous designs and selections may be emphasized and users may be guided to make evaluations and selections of the alternative parameters.
In another example, a sequence of interfaces and/or computations in a session may be configured to allow designs to be compared with respect to robustness of the designs. Robustness of the designs may indicate the range of parameters for which designs have acceptable or good performance. Interfaces may be used to indicate design performance over a range of parameters in addition to the best possible performance thereby allowing users to visualize/evaluate and debate the risks associated with the designs.
In some embodiments, collaboration interfaces in a collaboration session may be tailored or customized based on the type of the user. Users may be provided with a different interface according to their expertise, authority, tasks, roles, and the like. During a collaboration session, the platform may receive or determine the type of user interacting with the platform. A user type may be specified by an administrator or a curator of a project or a session. A user type may be associated with an identity or credentials of a user. In some cases, a user may specify their own role or type. In some cases, the sequence of interfaces or available computations may be different for each user type in a session. For example, during a collaboration session configured with a goal of selecting one or more designs, different user types may be shown different parameters of a design under consideration. The parameters and data shown to the user may depend on the expertise of the user. For example, a user designated as a financial expert may be show parameters that are focused on the cost, time, resources, personnel, and the like associated with the design. Another user that is designated as an expert in patient recruitment may be shown parameters of the designs that focus on the patient requirement and/or assumptions associated with each design. In embodiments, each interface customized for each user type may provide options to search for other designs according to the parameters associated with the user type. In some cases, some users may be provided with interfaces that hide certain aspects, such as aspects that are sensitive or that the user is not authorized to view. In some embodiments, interfaces may be configured such that every group member can view the same interface during a collaboration session.
In some embodiments, decisions in a collaboration session may be achieved by consensus, voting, and the like. In embodiments, some users or user types may be designed as owners or curators of one or more parameters of the designs. The owners or curators may be specified according to expertise of the user. In some embodiments, consensus on a design decision may require approval by each curator of one or more parameters of the design. In some cases, design parameters may be divided into subsets and different users may be assigned as experts for each subset of parameters. In one example, during a collaboration session, different users may be shown different parameters of a design based on their expertise. The interfaces for each user may show options for approving a design based on the respective parameters, rejecting the design based on the respective parameters, and the like. In one configuration, consensus on a design or a selection of a design during a collaborative session may require approval from each user responsible for a subset of the design parameters. In another example, interfaces for voting on designs may allow a user to collectively agree or disagree on a design by voting. In some cases, votes of users may be weighted based on their expertise, seniority, and the like. In embodiments, the platform may trac each user vote (a binary value such as yes or no, a range of values or rating such as 1-10, or 1-100). The votes may be associated with the user expertise such that the votes may be filtered according to each expertise or type of user. The votes may be associated with a weight (based on seniority, expertise, assigned weight). A vote score for a design may be determined by summing all the votes and/or vote value for each design. In some embodiments, each vote or each vote value may be multiplied by the weight associated with each vote to determine a vote score.
In another example, a goal of a collaboration session may include selection of one or more trial designs from a set of simulated trial designs. A collaboration session may be configured to divide users into multiple groups of one or more users. Each group may be provided with a sequence of interfaces and computations to evaluate and select one or more designs. Each user or group of users may individually explore and/or be guided to explore and consider different designs. Design selections made by the individuals or subgroups of users may then be evaluated collectively in a joint collaborative session.
In another example, a goal of a collaboration session may include development of simulation parameters for running a design simulation. Based on the specified goal, a platform may load or determine a proposed starting point for the session (such as which interface to show) and what interfaces may be shown and/or computations may be performed as a result of selections or actions in the first interface. As an example, the starting point for the session in this example may be an interface for specifying design goals and design parameters. The sequence of interfaces may step through the design, scenario, and performance parameters that need to be defined before the simulation is executed. In embodiments, different users may be identified as experts or associated with different parameter types. In some cases one type of users may be shown only parameters for scenarios while another may be shown only parameters for designs.
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The space of simulated designs can be explored in a systematic way using convex hulls and convex hull peeling. As described herein, convex hulls separate out P-designs that are reachable by linear weighting criteria (CH-designs or CH-points). In many cases, design analysis and recommendation may start with recommendations of CH-designs or designs that are twins, siblings, or are within an epsilon distance to the CH-designs. Designs that are on or near the convex hull are often the most desirable designs (designs that are often ultimately selected for a study). Concentrating recommendations and design analysis on designs on or near the convex hull greatly reduces the number of designs that need to be examined. In some cases only one or two percent of the total simulated designs need to be considered when initial design recommendations provided by the platform are on or near the convex hull. Design recommendations based on convex hull designs may have further benefits such as providing fast evaluation for any weights specified and allowing introduction of constraints that can be used to eliminate unlikely or uninteresting designs and scenarios.
In embodiments, simulated designs may be explored based on a hierarchy of convex hulls. A hierarchy of convex hulls may be created by determining a convex hull of designs, removing the designs that are on the convex hull, and determining another convex hull of the remaining designs. The “peeling” of convex hulls and determining new convex hulls can be performed iteratively to identify a series of convex hulls in a simulated design space. The designs associated with each convex hull can create a hierarchy of designs.
Designs from each convex hull may be associated with a level. The designs in each convex hull may be stored and associated with the convex hull level on which they can be found. In general, designs on the first convex hull (first level) may have better performance than designs on following convex hulls (higher levels). In some cases, although a design from a higher lever may have worse performance than a design in a first level convex hull, the design from a higher level may be preferable for a study due to other considerations such as practicality, familiarity with the design type, regulatory approval delays, and the like. The hierarchy of designs may provide for quick identification of designs that are within a given percentage of the optimum designs (designs that are on the first convex hull). In some embodiments, convex hull levels may be used for recommending designs to a user (such as with the recommendation engine described herein). Initial recommendations may include recommendations from the first convex hull or the first couple of convex hulls. In response to a user request or other triggers, additional recommendations from other levels of convex hulls may be provided to the user. The organization and progressive suggestion of designs from higher level convex hulls provides for a systematic organization of designs for recommendations allowing a user to consider designs ordered by their optimality.
In some embodiments convex hull levels may be associated with an epsilon distance. Convex hull peeling may include peeling of designs that are on a convex hull and designs that an epsilon distance from the designs on the convex hull. Designs associated with each convex hull level may include designs that are on a convex hull and designs that are epsilon distance away from the designs on a convex hull. Epsilon distance convex hulls level may be defined by first determining designs on the convex hull and epsilon distance designs from the designs on the convex hull. The designs on the first convex hull and epsilon distance away from the designs on the first convex hull may be associated with the first level. The second level designs may be determined by finding designs a convex hull of all the design except the designs that are in the first level. The second level designs may include designs that are on the second convex hull and all the designs that are epsilon distance away from the second convex hull. Additional levels of designs may be determined in a like manner. In embodiments, epsilon distance may be refined based on the number of designs in each level. In some cases, a different epsilon distance may be defined for each level such that each level has the same number of designs, less than predetermined number of designs, at least minimum number of designs, or other metric.
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In some embodiments, a hierarchy of convex hulls and convex hull peeling may be used to reduce the number of simulations in a study. In some cases where scenarios are monotone with respect to criteria, results of simulation of one scenario may be leveraged to reduce the number of designs that need to be simulated to find the convex hull for designs for other scenarios. In one embodiment, an algorithm may iteratively determine a convex hull of designs under a first scenario and simulate the designs for a second scenario. The convex hull of the designs in the second scenario may be determined without simulating all of the designs but only designs that are within the first couple of convex hulls under the first scenario until no improvement to the convex hull of the designs under the second scenario is observed. In some examples, a 4×-8× reduction in simulations needed to find the convex hull for a second scenario can be achieved by leveraging convex hull peeling in simulated designs for a first scenario.
The iterations of determining a new convex hull for the first scenario, simulating the designs from the convex hull under the second scenario, and determining the convex hull of all the simulated designs under the second scenario may continue until there is no improvement or change in the convex hull for the second scenario for a threshold number of iterations (such as two or more, or three or more iterations).
A convex hull peeling for finding convex hull for adjacent monotone scenario without simulating full set of designs may take as input a dataset for a first scenario. The dataset for the first scenario may include simulation results for all design for the first scenario and may include design parameters for the designs and a multicriteria vector that identifies the simulated performance of the designs for the first scenario. Input to the algorithm may further include scenario variables for a second scenario. The algorithm may output the designs on the convex hull for the second scenario. The algorithm may start by initializing stopping parameter k to an initial value of 1. In step two of the algorithm, the kth convex hull for the dataset for scenario 1 may be computed using a convex hull algorithm. In step three of the algorithm, each design in the kth convex hull determined in step two may be simulated under the second scenario to calculate its multi-criteria vectors. In step four, the convex hull of the vectors determined in step three may be determined. In step five, the convex hull for the second scenario is compared to the convex hull computed for the second scenario in the k−1 iteration. In step six, the value of k may be incremented and steps two through five of the algorithms may be repeated until the convex hull for the second scenario does not change for at least two iterations.
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In embodiments, convex hull peeling may provide for evaluation of a design's robustness. For example, in embodiments, each convex hull level can have its own robustness ranking. In such embodiments, a user may be able to determine the most robust designs in each layer. As will be understood, in embodiments, some layers may have designs with an average robustness higher than an average robustness of other layers. Thus, some embodiments of the current disclosure may focus a user to search for designs within a particular layer having a high robustness. Embodiments of the design recommendation algorithm, as described herein, may evaluate the robustness of each layer and rank one or more of the layers based at least in part on robustness. The recommendation algorithm may be configured to recommend one or more layers, e.g., the top three (3), based on preferences derived from historical data, e.g., past user preferences.
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Accordingly, an embodiment system 16000 for providing adaptive replication in clinical trial design simulation is shown. The system 16000 may include a server 16010 having at least one processor and a memory device. The system 16000 may further include an electronic device 16012, one or more remote servers 16014, 16016, 16018, and/or a database 16020 which may be in electronic communication with the server 16010 and/or each other via a network 16022. The server 16010 may form part of and/or host one or more of the platforms 104 (
The server 16010 may be structured to execute a replication process forming part of a clinical trial design simulation that comprises a plurality of replications of a clinical trial design. As will be understood, a replication of a clinical trial design is a simulated instance of a clinical trial design under a given scenario and with a given set of parameters. During the replication process, the server 16010 may determine a performance criteria, e.g., a member of criteria space 318 (
The electronic device 16012 may be a user device, e.g., 102 (
The database 16020 may form part of a data facility, e.g., 138 (
The remote servers 16014, 16016, and/or 16018 may form part of a collection of computation resources, e.g., 150 (
In some embodiments, the number of simulated replications used to evaluate a design may be dynamically determined. The number of simulated replications may be dynamically evaluated according to results of simulations. In some embodiments simulations for a design may be configured for a fixed number of replications. As the simulations progress, data from the simulations may be analyzed to determine if the number of simulations may be decreased or should be increased. For example, some embodiments may stop replications when the standard error of the score estimate is sufficiently small. Embodiments may also adapt the number of replications to the quality of the design. For example, some embodiments may stop replications when the difference from the lower 99% confidence interval of the best design found so far is higher than a 99% upper confidence interval of the design being replicated. Embodiments may invoke parallel processing to compute replications in batches, e.g., one-hundred (100) replications for up to a maximum number, e.g., (10), of batches for several designs simultaneously. Adaptive rules, e.g., rules that change over time or in response to a set of conditions, may terminate replication sampling for designs.
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The results interpretation circuit 16112 is structured to interpret the replication results data 16124 of at least one of the replications 16122, and the performance circuit 16114 is structured to determine, based at least in part on the replication results data 16124, a performance criteria value 16126. The adjustment determining circuit 16116 is structured to determine, based at least in part on the performance criteria value 16126, an adjustment value 16128 to the replication process 16120. The adjustment circuit 16118 is structured to adjust the replication process 16120 based at least in part on the adjustment value 16128.
The performance criteria value 16126 may include and/or be based at least in part on a standard error. The adjustment determining circuit 16116 may be further structured to configure the adjustment value 16128 to cease the replication process 16120 when the standard error is below a threshold.
The performance criteria value 16126 may include and/or be based at least in part on an upper confidence interval of the clinical trial design corresponding to the replication 16122 that generated the replication results data 16124. In embodiments, the adjustment determining circuit 16116 may be further structured to configure the adjustment value 16128 to cease the replication process 16120 when a difference from a lower confidence interval of another clinical trial design (other than the one corresponding to the replication 16122 which generated the replication results 16124) is higher than the upper confidence interval.
In embodiments, the apparatus 16100 may include a results retrieval circuit 16130 structured to retrieve at least some of the replication results data 16120 from a quick search data structure 16132, which may be stored in a database, e.g., 16020 (
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In embodiments, adjusting the replication process 16216 may include ceasing the replication process when the performance criteria value includes and/or is based at least in part on a standard error that is below a threshold 16218. In embodiments, adjusting the replication process 16216 may include ceasing the replication process when the performance criteria value incudes and/or is based at least in part on an upper confidence interval of the clinical trial design and a difference from a lower confidence interval of another clinical trial design is higher than the upper confidence interval 16220. In such embodiments, the lower confidence interval and/or the upper confidence interval may be 99%. In embodiments, adjusting the replication process 16216 may include increasing a number of replications in the replication process 16222. In embodiments, adjusting the replication process 16216 may include decreasing a number of replications in the replication process 16222. In some embodiments the number of simulated replications used to evaluate a design may be dynamically determined as part of the replication process or it may be determined outside of the replication process. In embodiments, the number of replications may be fixed based on data from previously simulated designs.
The method 16200 may further include retrieving at least some of the replication results data from a quick search data structure 16226. The quick search data structure may be a SimCube. In embodiments, the quick search data structure may be stored in a database, e.g., database 16020 (
As will be appreciated, by providing for dynamic changing/adjusting of the number of replications performed as part of a simulation, some embodiments of the present disclosure may reduce the amount of time required to simulate a clinical trial design by reducing the number of replications in situations where continued evaluations produce diminishing returns and by increasing the number of replications in situations where more accuracy is beneficial. In embodiments, the replication process and/or clinical trial simulation may be based at least in part on, or form part if, a simulated annealing analysis. Further, in embodiments, machine learning may be used to determine an adjustment to a replication process. For example, a neural network may be trained to determine, from design and/or scenario criteria, when the number of replications should be increased, decreased, and/or when a replication process should be stopped.
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Accordingly, a system 16300 for providing enhanced SA in clinical trial design simulation is shown. The system 16300 may include a server 16310 having at least one processor and a memory device. The system 16300 may further include an electronic device 16312, one or more remote servers 16314, 16316, 16318, and/or a database 16320 which may be in electronic communication with the server 16310 and/or each other via a network 16322. The server 16310 may form part of and/or host one or more of the platforms 104 (
The server 16310 may be structured to execute a SA process forming part of a clinical trial design simulation. The server 16310 may use machine learning to predict simulation results, as opposed to performing a more traditional simulation, for one or more designs identified during the SA process. For example, the server 16310 may select an initial clinical trial design to serve as the starting point for SA analysis/exploration. The server 16310 may determine the direction in which to move from the initial clinical trial design and then identify a new design in the selected direction. The server 16310 may then use machine learning to predict simulation results and then begin the process over again until termination of the SA path. In certain embodiments, the server 16310 may receive and/or generate data defining a convex hull tunnel for the initially selected clinical trial design. The server may then select designs for inclusion in the SA path based at least in part on relationships between the designs and the convex hull tunnel.
The electronic device 16312 may be a user device, e.g., 102 (
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As will be appreciated, embodiments of the apparatus 16400 may include various combinations of the circuit shown in
The results interpretation circuit 16410 may be structured to interpret initial simulation results data 16430 for a set of clinical trial designs. The first identification circuit 16412 is structured to identify an initial clinical trial design 16432 based at least in part on the initial simulation results data 16430. The performance prediction circuit 16414 is structured to predict performance data 16434 for clinical trial designs related to the initial clinical trial design 16432 based at least in part on varying parameters for the initial clinical trial design 16432. The second identification circuit 16416 is structured to identify a first new clinical trial design 16436 for simulation based on the predicting. The results prediction circuit 16418 is structured to predict, via machine learning, first simulation results data 16438 for the first new clinical trial design 16436. The third identification circuit 16420 is structured to identify, based at least in part on the first simulation results data 16438, a second new clinical trial design 16440 for simulation by varying parameters of the first new clinical trial design 16436.
The convex hull interpretation circuit 16422 is structured to interpret convex hull tunnel data 16442 corresponding to a convex hull tunnel defined, in part, by the set of clinical trial designs. The first identification circuit 16412 may be structured to identify the initial clinical trial design 16432 based at least in part on the convex hull tunnel data 16442. The second identification circuit 16416 may be structured to identify the first new clinical trial design 16436 based on the performance criteria data 16434 and on the convex hull tunnel data 16442. The results determining circuit 16424 may be structured to determine first simulation results data 16444 for the first new clinical trial design 16436. The third identification circuit 16420 may be structured to identify, based at least in part on the first simulation results data 16444, the second new clinical trial design 16440 for simulation by varying parameters of the first new clinical trial design 16436.
In embodiments, the machine learning may be based at least in part on a neural network and/or a regression model, e.g., a regression tree. Embodiments of the machine learning may be trained via supervised learning on training sets. Such training sets may include a series of designs with known performance results. Data from the previously calculated neighboring designs may be leveraged to train a neural network via reinforcement learning to predict the value of a design as opposed to simulating the design. The training set may include a subset of values of scenario parameters and the predicted output may be values for the one or more designs.
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In embodiments, one or more of the method of enhanced simulated annealing described herein may be form part of (or work in conjunction with) the recommendation engine/algorithm. For example, embodiments of the recommendation engine may use enhanced simulated annealing to find candidate designs for recommendation. In embodiments, enhanced simulated annealing may be used to dynamically update one or more parameters of a design, which may be in real-time. For example, one or more parameters of a design corresponding to an ongoing trial may analyzed and/or adjusted based on results from an enhanced simulated annealing analysis. In embodiments, the one or more parameters may be updated while the trial is being conducted, i.e., during the trial. In embodiments, enhanced simulated annealing may be used to determine changes in the outcome of an ongoing trial resulting from potential adjustments to the corresponding design.
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Accordingly, the system 17000 may include a server 17010 having at least one processor and a memory device. The system 17000 may further include an electronic device 17012, one or more remote servers 17014, 17016, 17018, and/or a database 17020 which may be in electronic communication with the server 17010 and/or each other via a network 17022. The server 17010 may form part of and/or host one or more of the platforms 104 (
The server 17010 may be structured to execute a SA process forming part of a clinical trial design simulation. The server 17010 may use a quick search data structure to determine/retrieve/lookup results of simulations (if previously simulated), as opposed to performing a more traditional simulation, for one or more designs identified during an SA process (or other searching procedure). For example, the server 17010 may select an initial clinical trial design to serve as the starting point for SA analysis/exploration. The server 17010 may determine the direction in which to move from the initial clinical trial design and then identify a new design in the selected direction. The server 17010 may then check, via a quick search data structure, to see if results for the design have already been simulated, and then begin the process over again until termination of the SA path.
The electronic device 17012 may a user device, e.g., 102 (
In embodiments, the quick search data structure may take the form of a SimCube having a structure that is a natural fit for simulated annealing algorithms, e.g., a single step in simulated annealing involves moving from a position/cell (within the SimCube) to an adjacent position/cell (within the SimCube) by changing just one design parameter or one scenario variable. The number of iterations of a simulated annealing path from a design to a locally optimal design may be the Manhattan distance between the two designs in the hypercube. For example, in embodiments, the quick search data structure may be a hypercube having a number of dimensions equal to the sum of the number of design parameters and the number of scenario variables that form a plurality of cells, each of which may contain a vector of simulation results that may include a multi-criteria vector.
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Some embodiments of the current disclosure may also include network implementations of SimCubes, wherein each design may be a node within undirected edges joining each pair of designs that differ in rank in only one parameter for which the ranks differ by one (1). In such embodiments, the network data structure may be useful to efficiently compute neighbors to a design of interest and/or for constructing clusters of similar designs. In embodiments, samples of scenario-design combinations, rather than simulating each design for all scenarios, may be used. For example, embodiments of the quick search data structures described herein may be extended to this setting by increasing the number of parameters (and hence SimCube dimensions) to be the sum of design and scenario parameters. As will be further understood, embodiments of the quick search data structures described herein may also be used for simulations of clinical trials operations such as recruitment forecasting and drug supply.
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In embodiments, the relationship for storing designs in the quick search data structure may be based at least in part on machine learning. For example, a machine learning module, e.g., a neural network, may be trained, via supervised and/or unsupervised learning, to determine one or more relationships, which may optimize the quick search data structure for a particular evaluation session.
In embodiments, data entry into the platform may involve data entry into one or more forms. In embodiments, forms may be web based or browser based applications, native applications, or other executable code that proves an interface for data entry. In some embodiment, data entry may be provided with a specification file that that may be read by the platform or via an API connection to another platform or data source.
The next data entry may be related to the “Response” parameters. As shown in
The next data entry may be related to the enrollment parameters. As shown in
The next data entry may be related to the cost parameters. As shown in
Another portion of the data entry may be related to revenue parameters. As shown in
Another data entry may be related to the scoring parameters. As shown in
Throughout the data entry process, the input advisor may monitor user entries and identify conflicts in data values and/or suggest entries of data values. In some instances, the input advisor may predict, based on historical data and/or data entry what values or types of data are associated with some inputs. The input advisor may highlight or identify ranges of values that are consistent with historical data of data entry values. In the case where some data values are outside of expected or historical data values the entry area may be flagged or highlighted for review.
Once data is entered, the entry data from each input field are assembled and compiled to define the simulation set via the “Collections” tab as shown in
In some embodiments, generation of models may be a trigger to request and allocate computation resources for simulation. In the case of batch mode computation, the resources may be requested before they are needed to allow time for the allocation.
In the next step, simulations may be started by selecting the “simulate” button. In embodiments, before simulations are queued to run, the user may be informed of the cost of the simulations in units such as dollars or credits. Then the “Simulate” button may be clicked to start the simulations. The models for each simulation may be submitted to one or more engines for simulation. The engines may use one or more cloud computing resources to execute the models to determine the performance of each design model.
In embodiments, simulations may be exhaustive for all of the models. In some cases, only a partial set of the models may be simulated. In some embodiments, the partial set of models may be randomly selected or may be selected based on predictions (based on historical data) as to which designs in the models are likely to have the best performance for the specified criteria. In some embodiments, simulated annealing may be used to simulate a partial set of the models. Simulated annealing may be used to search for local maxima in performance space.
When the simulations end, the user may be prompted to view the results of the simulations via the tradeoff advisor. Clicking the “View Results” button may initiate calculation of scores and robustness scores from the simulation results and may load the simulation results into the tradeoff advisor. In embodiments, simulated data may be analyzed using one or more Pareto, convex hull, or other techniques to identify the optimum or near optimum designs. These Pareto, convex hull, and other recommended designs may be marked or highlighted in various interfaces of the tradeoff advisor.
In embodiments, the tradeoff advisor may include interfaces and tools to explore performance parameters of designs, compare designs, initiate additional simulations, and the like. The tradeoff advisor may include heatmaps as shown in
In embodiments, the tradeoff advisor may include scatterplots as shown in
In embodiments, tradeoff advisor may include boxplots as shown in
In embodiments, the tradeoff advisor may include additional interfaces for comparing designs (such as card interfaces, tornado diagrams, and the like described herein). Additional interfaces may be shown allowing users to drill down or see related designs that are similar (such as twins, siblings, designs that are within an epsilon-distance of a recommended or selected design, etc.).
The methods and systems described herein may be deployed in part or in whole through a machine having a computer, computing device, processor, circuit, and/or server that executes computer readable instructions, program codes, instructions, and/or includes hardware configured to functionally execute one or more operations of the methods and systems herein. The terms computer, computing device, processor, circuit, and/or server, (“computing device”) as utilized herein, should be understood broadly.
An example computing device includes a computer of any type, capable to access instructions stored in communication thereto such as upon a non-transient computer readable medium, whereupon the computer performs operations of the computing device upon executing the instructions. In certain embodiments, such instructions themselves comprise a computing device. Additionally or alternatively, a computing device may be a separate hardware device, one or more computing resources distributed across hardware devices, and/or may include such aspects as logical circuits, embedded circuits, sensors, actuators, input and/or output devices, network and/or communication resources, memory resources of any type, processing resources of any type, and/or hardware devices configured to be responsive to determined conditions to functionally execute one or more operations of systems and methods herein.
Network and/or communication resources include, without limitation, local area network, wide area network, wireless, internet, or any other known communication resources and protocols. Example and non-limiting hardware and/or computing devices include, without limitation, a general purpose computer, a server, an embedded computer, a mobile device, a virtual machine, and/or an emulated computing device. A computing device may be a distributed resource included as an aspect of several devices, included as an interoperable set of resources to perform described functions of the computing device, such that the distributed resources function together to perform the operations of the computing device. In certain embodiments, each computing device may be on separate hardware, and/or one or more hardware devices may include aspects of more than one computing device, for example as separately executable instructions stored on the device, and/or as logically partitioned aspects of a set of executable instructions, with some aspects comprising a part of one of a first computing device, and some aspects comprising a part of another of the computing devices.
A computing device may be part of a server, client, network infrastructure, mobile computing platform, stationary computing platform, or other computing platform. A processor may be any kind of computational or processing device capable of executing program instructions, codes, binary instructions and the like. The processor may be or include a signal processor, digital processor, embedded processor, microprocessor or any variant such as a co-processor (math co-processor, graphic co-processor, communication co-processor and the like) and the like that may directly or indirectly facilitate execution of program code or program instructions stored thereon. In addition, the processor may enable execution of multiple programs, threads, and codes. The threads may be executed simultaneously to enhance the performance of the processor and to facilitate simultaneous operations of the application. By way of implementation, methods, program codes, program instructions and the like described herein may be implemented in one or more threads. The thread may spawn other threads that may have assigned priorities associated with them; the processor may execute these threads based on priority or any other order based on instructions provided in the program code. The processor may include memory that stores methods, codes, instructions and programs as described herein and elsewhere. The processor may access a storage medium through an interface that may store methods, codes, and instructions as described herein and elsewhere. The storage medium associated with the processor for storing methods, programs, codes, program instructions or other type of instructions capable of being executed by the computing or processing device may include but may not be limited to one or more of a CD-ROM, DVD, memory, hard disk, flash drive, RAM, ROM, cache and the like.
A processor may include one or more cores that may enhance speed and performance of a multiprocessor. In embodiments, the process may be a dual core processor, quad core processors, other chip-level multiprocessor and the like that combine two or more independent cores (called a die).
The methods and systems described herein may be deployed in part or in whole through a machine that executes computer readable instructions on a server, client, firewall, gateway, hub, router, or other such computer and/or networking hardware. The computer readable instructions may be associated with a server that may include a file server, print server, domain server, internet server, intranet server and other variants such as secondary server, host server, distributed server and the like. The server may include one or more of memories, processors, computer readable transitory and/or non-transitory media, storage media, ports (physical and virtual), communication devices, and interfaces capable of accessing other servers, clients, machines, and devices through a wired or a wireless medium, and the like. The methods, programs, or codes as described herein and elsewhere may be executed by the server. In addition, other devices required for execution of methods as described in this application may be considered as a part of the infrastructure associated with the server.
The server may provide an interface to other devices including, without limitation, clients, other servers, printers, database servers, print servers, file servers, communication servers, distributed servers, and the like. Additionally, this coupling and/or connection may facilitate remote execution of instructions across the network. The networking of some or all of these devices may facilitate parallel processing of program code, instructions, and/or programs at one or more locations without deviating from the scope of the disclosure. In addition, all the devices attached to the server through an interface may include at least one storage medium capable of storing methods, program code, instructions, and/or programs. A central repository may provide program instructions to be executed on different devices. In this implementation, the remote repository may act as a storage medium for methods, program code, instructions, and/or programs.
The methods, program code, instructions, and/or programs may be associated with a client that may include a file client, print client, domain client, internet client, intranet client and other variants such as secondary client, host client, distributed client and the like. The client may include one or more of memories, processors, computer readable transitory and/or non-transitory media, storage media, ports (physical and virtual), communication devices, and interfaces capable of accessing other clients, servers, machines, and devices through a wired or a wireless medium, and the like. The methods, program code, instructions, and/or programs as described herein and elsewhere may be executed by the client. In addition, other devices required for execution of methods as described in this application may be considered as a part of the infrastructure associated with the client.
The client may provide an interface to other devices including, without limitation, servers, other clients, printers, database servers, print servers, file servers, communication servers, distributed servers, and the like. Additionally, this coupling and/or connection may facilitate remote execution of methods, program code, instructions, and/or programs across the network. The networking of some or all of these devices may facilitate parallel processing of methods, program code, instructions, and/or programs at one or more locations without deviating from the scope of the disclosure. In addition, all the devices attached to the client through an interface may include at least one storage medium capable of storing methods, program code, instructions, and/or programs. A central repository may provide program instructions to be executed on different devices. In this implementation, the remote repository may act as a storage medium for methods, program code, instructions, and/or programs.
The methods and systems described herein may be deployed in part or in whole through network infrastructures. The network infrastructure may include elements such as computing devices, servers, routers, hubs, firewalls, clients, personal computers, communication devices, routing devices and other active and passive devices, modules, and/or components as known in the art. The computing and/or non-computing device(s) associated with the network infrastructure may include, apart from other components, a storage medium such as flash memory, buffer, stack, RAM, ROM and the like. The methods, program code, instructions, and/or programs described herein and elsewhere may be executed by one or more of the network infrastructural elements.
The methods, program code, instructions, and/or programs described herein and elsewhere may be implemented on a cellular network having multiple cells. The cellular network may either be frequency division multiple access (FDMA) network or code division multiple access (CDMA) network. The cellular network may include mobile devices, cell sites, base stations, repeaters, antennas, towers, and the like.
The methods, program code, instructions, and/or programs described herein and elsewhere may be implemented on or through mobile devices. The mobile devices may include navigation devices, cell phones, mobile phones, mobile personal digital assistants, laptops, palmtops, netbooks, pagers, electronic books readers, music players and the like. These devices may include, apart from other components, a storage medium such as a flash memory, buffer, RAM, ROM and one or more computing devices. The computing devices associated with mobile devices may be enabled to execute methods, program code, instructions, and/or programs stored thereon. Alternatively, the mobile devices may be configured to execute instructions in collaboration with other devices. The mobile devices may communicate with base stations interfaced with servers and configured to execute methods, program code, instructions, and/or programs. The mobile devices may communicate on a peer to peer network, mesh network, or other communications network. The methods, program code, instructions, and/or programs may be stored on the storage medium associated with the server and executed by a computing device embedded within the server. The base station may include a computing device and a storage medium. The storage device may store methods, program code, instructions, and/or programs executed by the computing devices associated with the base station.
The methods, program code, instructions, and/or programs may be stored and/or accessed on machine readable transitory and/or non-transitory media that may include: computer components, devices, and recording media that retain digital data used for computing for some interval of time; semiconductor storage known as random access memory (RAM); mass storage typically for more permanent storage, such as optical discs, forms of magnetic storage like hard disks, tapes, drums, cards and other types; processor registers, cache memory, volatile memory, non-volatile memory; optical storage such as CD, DVD; removable media such as flash memory (e.g. USB sticks or keys), floppy disks, magnetic tape, paper tape, punch cards, standalone RAM disks, Zip drives, removable mass storage, off-line, and the like; other computer memory such as dynamic memory, static memory, read/write storage, mutable storage, read only, random access, sequential access, location addressable, file addressable, content addressable, network attached storage, storage area network, bar codes, magnetic ink, and the like.
Certain operations described herein include interpreting, receiving, and/or determining one or more values, parameters, inputs, data, or other information (“receiving data”). Operations to receive data include, without limitation: receiving data via a user input; receiving data over a network of any type; reading a data value from a memory location in communication with the receiving device; utilizing a default value as a received data value; estimating, calculating, or deriving a data value based on other information available to the receiving device; and/or updating any of these in response to a later received data value. In certain embodiments, a data value may be received by a first operation, and later updated by a second operation, as part of the receiving a data value. For example, when communications are down, intermittent, or interrupted, a first receiving operation may be performed, and when communications are restored an updated receiving operation may be performed.
Certain logical groupings of operations herein, for example methods or procedures of the current disclosure, are provided to illustrate aspects of the present disclosure. Operations described herein are schematically described and/or depicted, and operations may be combined, divided, re-ordered, added, or removed in a manner consistent with the disclosure herein. It is understood that the context of an operational description may require an ordering for one or more operations, and/or an order for one or more operations may be explicitly disclosed, but the order of operations should be understood broadly, where any equivalent grouping of operations to provide an equivalent outcome of operations is specifically contemplated herein. For example, if a value is used in one operational step, the determining of the value may be required before that operational step in certain contexts (e.g. where the time delay of data for an operation to achieve a certain effect is important), but may not be required before that operation step in other contexts (e.g. where usage of the value from a previous execution cycle of the operations would be sufficient for those purposes). Accordingly, in certain embodiments an order of operations and grouping of operations as described is explicitly contemplated herein, and in certain embodiments re-ordering, subdivision, and/or different grouping of operations is explicitly contemplated herein.
The methods and systems described herein may transform physical and/or or intangible items from one state to another. The methods and systems described herein may also transform data representing physical and/or intangible items from one state to another.
The methods and/or processes described above, and steps thereof, may be realized in hardware, program code, instructions, and/or programs or any combination of hardware and methods, program code, instructions, and/or programs suitable for a particular application. The hardware may include a dedicated computing device or specific computing device, a particular aspect or component of a specific computing device, and/or an arrangement of hardware components and/or logical circuits to perform one or more of the operations of a method and/or system. The processes may be realized in one or more microprocessors, microcontrollers, embedded microcontrollers, programmable digital signal processors or other programmable device, along with internal and/or external memory. The processes may also, or instead, be embodied in an application specific integrated circuit, a programmable gate array, programmable array logic, or any other device or combination of devices that may be configured to process electronic signals. It will further be appreciated that one or more of the processes may be realized as a computer executable code capable of being executed on a machine readable medium.
The computer executable code may be created using a structured programming language such as C, an object oriented programming language such as C++, or any other high-level or low-level programming language (including assembly languages, hardware description languages, and database programming languages and technologies) that may be stored, compiled or interpreted to run on one of the above devices, as well as heterogeneous combinations of processors, processor architectures, or combinations of different hardware and computer readable instructions, or any other machine capable of executing program instructions.
Thus, in one aspect, each method described above and combinations thereof may be embodied in computer executable code that, when executing on one or more computing devices, performs the steps thereof. In another aspect, the methods may be embodied in systems that perform the steps thereof, and may be distributed across devices in a number of ways, or all of the functionality may be integrated into a dedicated, standalone device or other hardware. In another aspect, the means for performing the steps associated with the processes described above may include any of the hardware and/or computer readable instructions described above. All such permutations and combinations are intended to fall within the scope of the present disclosure.
While the disclosure has been disclosed in connection with certain embodiments shown and described in detail, various modifications and improvements thereon will become readily apparent to those skilled in the art. Accordingly, the spirit and scope of the present disclosure is not to be limited by the foregoing examples, but is to be understood in the broadest sense allowable by law.
Claims
1.-595. (canceled)
596. A method comprising:
- obtaining a criteria for a trial design study;
- determining permutations for designs in response to the criteria;
- determining permutations for scenarios in response to the criteria;
- generating combinations of the permutations for the designs and the permutations for the scenarios;
- simulating designs corresponding to the generated combinations; and
- determining performance of the simulated designs.
597. The method of claim 596 further comprising:
- estimating a number of the combinations using the criteria.
598. The method of claim 597 further comprising:
- in response to the estimated number being greater than a threshold, suggesting modifications to the criteria.
599. The method of claim 597 further comprising:
- in response to the estimated number being less than a threshold, suggesting modifications to the criteria.
600. The method of claim 596 further comprising:
- examining the combinations for invalid combinations.
601. The method of claim 596 further comprising:
- examining the permutations for invalid permutations.
602. The method of claim 596 further comprising:
- predicting the performance of the combinations; and
- removing a subset of the combinations, prior to simulating the designs, based on the predicted performance.
603. The method of claim 602, wherein the predicting is based on historical data.
604. The method of claim 596, wherein the combinations are exhaustive for the criteria.
605. The method of claim 596 further comprising:
- determining optimality from the performance of the simulated designs.
606. An apparatus comprising:
- a space definition circuit structured to interpret criteria data for a trial design;
- a design parameter circuit structured to determine permutations for designs in response to the criteria data;
- a scenario parameter circuit structured to determine permutations for scenarios in response to the criteria data;
- a combinations circuit structured to generate combinations of permutations for designs and permutations for scenarios; and
- a simulation circuit structured to evaluate a performance of each combination.
607. The apparatus of claim 606 further comprising:
- an estimator circuit configured to estimate number of combinations using the criteria.
608. The apparatus of claim 606 further comprising:
- a validity checker circuit configured to examine the combinations for invalid combinations.
609. The apparatus of claim 606 further comprising:
- a validity checker circuit configured to examine the permutations for invalid permutations.
610. The apparatus of claim 606 further comprising:
- a validity checker circuit configured to: predict the performance of the combinations; and remove a subset of the combinations prior to simulating based on the predicted performance.
611. The apparatus of claim 610, wherein the performance is predicted based on historical data.
612. The apparatus of claim 606, wherein the combinations of permutations are exhaustive for the criteria.
613. The apparatus of claim 606, further comprising an analysis circuit configured to determine optimality from the performance.
614. A method comprising:
- configuring an execution flow for a trial design evaluation using a configurable interface having at least one node element and at least one arc element, wherein the execution flow is defined, in part, via the at least one node element and the at least one arc element;
- executing the trial design evaluation using the execution flow;
- reconfiguring at least one of the at least one node element or the at least one arc element in the execution flow; and
- executing the trial design evaluation using the reconfigured execution flow.
615. The method of claim 614, further comprising:
- evaluating historical trial design selections to identify one or more trial design parameters based at least in part on one or more trial design criteria determined from a user via an interactive interface, wherein executing the trial design evaluation is based at least in part on a quick search data structure and the one or more trial design parameters;
- generating a substitute for at least some results from the execution of the trial design evaluation based at least in part on a relationship between the results and supplemental data;
- generating a performance surface based at least in part on a set of trial designs corresponding to the results;
- evaluating one or more trial designs based at least in part on the performance surface; and
- calculating a score based on normalized score component values corresponding to the results from the execution of the trial design evaluation.
616.-696. (canceled)
Type: Application
Filed: Jan 30, 2021
Publication Date: Aug 5, 2021
Inventors: Jaydeep Bhattacharya (Acton, MA), James Bolognese (Woodbridge, NJ), Alexandre Buer (Holliston, MA), Eric Edwards (Nolensville, TN), Stanley Y. Huang (Wellesley, MA), Yannis Jemiai (Arlington, MA), Cyrus Mehta (Cambridge, MA), Nitin Patel (Cambridge, MA), Anne Pelz (Arlington, MA), Ajay Prabhakar Sathe (Pune), Joshua A. Schultz (Boston, MA), Pralay Senchaudhuri (Cambridge, MA)
Application Number: 17/163,424