Abstract: Techniques for denoising an electromagnetic signal are disclosed. The techniques utilize an antenna, a weight adaptation component, a reservoir computer including a computer interpretable neural network, a delay embedding component, and an output layer computer. The techniques include passively acquiring an electromagnetic signal by the antenna, producing a plurality of reservoir state values by the reservoir computer based on the electromagnetic signal, collecting the plurality of reservoir state values by the delay embedding component into a historical record, determining a plurality of reservoir state value weights by the weight adaptation component based at least in part of the historical record, scaling, by the plurality of reservoir state value weights, to produce a plurality of output values, the plurality of reservoir state values by the output layer computer, and outputting the plurality of output values, where the scaling occurs over a plurality of clock cycles of a clock for the system.

Abstract: Systems and methods of computing classifications for and migrating digital content that includes accessing a digital content corpus within a source data storage system; in response to accessing the digital content corpus, for each distinct item of digital content of the plurality of distinct items of digital content: computing, via one or more digital content machine learning classification models, a content classification inference; identifying automated digital content handling tasks of a plurality of distinct digital content handling tasks based on the content classification inference; executing the automated content handling tasks identified for each distinct item of digital content, wherein executing the automated content handling tasks includes: designating a storage location within a target data storage system based on the in-migration content classification inference; and migrating a respective item of digital content from the source data storage system to the designated storage location within the ta

Abstract: Mechanisms are provided for adjusting a configuration of data stored in a storage system. According to various embodiments, a storage module may be configured to store a configuration of data. A processor may be configured to identify an estimated performance level for the storage system based on a configuration of data stored on the storage system. The processor may also be configured to transmit an instruction to adjust the configuration of data on the storage system to meet the service level objective when the estimated performance level fails to meet a service level objective for the storage system.

Abstract: A distributed storage system may synchronously apply an Information Lifecycle Management (ILM) policy to objects at ingest. In one embodiment of synchronous ILM, three options are available for a user: balanced, strict, and dual commit. Dual commit refers to the behavior where one will always create two replicated copies in the same site and then apply ILM asynchronously. Strict refers to the behavior where the storage system attempts to apply the ILM policy synchronously on ingest, and if the storage system cannot the ingest of the object will fail. This ensures that the storage system can guarantee that ILM has been applied to recently ingested objects. Balanced refers to the behavior where the storage system attempts to apply ILM synchronously, but if the storage system cannot the storage system may fall-back to dual-commit.

Abstract: Provided is a computer system to present information useful for achieving purposes related to an object by utilizing AI prediction. The computer system manages a prediction model for predicting an object event based on evaluation data and feature profiling database that defines a change rule of each of the plurality of feature values included in the evaluation data, generates change policy data by changing the plurality of feature values included in the evaluation data based on the feature profiling database, calculates an evaluation value indicating effectiveness of the change policy data, and generates display data for presenting the change policy data and the evaluation value as information useful for achieving purposes related to the object.

Abstract: A method of capturing a fractional snapshot of a distributed file system includes receiving a snapshot request to generate a factional snapshot of a file system. The request includes an indication of a subset of data of the file system. The method further includes identifying, by a processing device, the subset of data of the file system indicated by the snapshot request and generating the fractional snapshot comprising the subset of data of the file system indicated by the snapshot request.

Abstract: Methods, apparatus and computer program product for improving data indexing in a group-based communication platform are described herein. The group-based communication platform having a computed collection and one or more live collections. The computer-implemented method includes generating a new collection, the new collection being generated at a snapshot time point; associating a collection manager with the new collection; retrieving a plurality of electronic messages from the computed collection and the one or more live collections; writing the plurality of electronic messages to the new collection, the writing being completed at a cut-over time point; synchronizing the new collection with the one or more live collections based on the plurality of electronic messages; and redirecting the read alias and the write alias from the computed collection to the new collection.

Abstract: Methods, computer systems, computer-storage media, and graphical user interfaces are provided for facilitating generation and utilization of group folders, according to embodiments of the present technology. In embodiments, an indication to merge a first folder associated with a first entity with a second folder associated with a second entity is received. Based on the indication to merge, a group folder associated with the first entity and the second entity is generated. A representation of the group folder is provided for presentation via a navigation pane of the messaging application. A selection of the representation of the group folder can cause execution of a search query in association with an index of messages to obtain messages associated with the first entity and/or the second entity.

Abstract: Data storage methods and systems for use with multiple cloud storage systems. The methods and systems use passive metadata files which are stored on cloud storage systems to eliminate the risk of a data conflict when data is being written to the multi-cloud storage system. The methods and systems enable a multi-cloud storage system to function safely without data corruption or loss due to potential conflicts. The methods and systems achieve this without the need for a central control server and without the need for the cloud storage systems or the clients to communicate with one another.

Abstract: Systems and methods for maintaining and updating file system shadows by a synchronization client of a cloud-based platform. In some embodiments, an executor of the synchronization client can execute an action on an item in the local file system which changes the state of the item from an old state to a new state. The synchronization client updates the file system shadows with the new state of the item via an interface to facilitate generation of a synchronization event for the change to the item, that would otherwise go undetected if the change to the item was immediately reversed. In some embodiments, methods for providing shadow consistency and enhancing concurrent access to shadows are implemented by the synchronization client in maintaining and updating the file system shadows.

Abstract: A method for creating a link between hyperledger blocks by a block link server. The method comprises receiving by a block link server executing on a computer system a first link creation message from a first network element, the first link creation message comprising first block information comprising a first hyperledger identifier and a first block identifier, both associated with a first hyperledger, receiving by the block link server a second link creation message, comprising second block information comprising a second hyperledger identifier and a second block identifier, both associated with a second hyperledger, storing by the block link server a link data structure comprising the first block information and the second block information, and sending by the block link server a link identifier of the link data structure to the first network element.

Abstract: A computer-implemented knowledge asset distribution platform distributes packages of knowledge assets between plural provider system environments (PSE) and/or consumer system environments (CSE), which store knowledge assets and make the knowledge assets available to users of the CSE. The platform includes one or more processor unit(s), with one or more non-transitory memory unit(s), and a distribution module that distributes packages of knowledge assets. The platform includes a receiver module that receives packages of knowledge assets, a database module that stores packages of knowledge assets and/or stores content information of packages of knowledge assets, a browser module that provides a browser function for browsing the knowledge assets stored by the database module and/or for browsing the content information stored by the database module and a sender module that relays packages of knowledge assets.

Abstract: A dynamic schema service (DSS) stores and vends data schema for use by one or more client services. Each schema includes one or more data fields that describe related entities. The DSS also stores meta-schema, which defines limits for field definitions in the schema and other constraints. Using the DSS, a service owner defines fields and constraints unique to its business application and can revise those fields and constraints over time. When the client service requires a schema, the client service sends a request to the DSS, and the DSS responds with the current version of the schema for use by the client service. Service owners are able to edit their schemas in DSS, and the changes are immediately implemented in the corresponding services by virtue of the schema request to DSS. In some embodiments, the DSS employs a hierarchical graph structure to determine the requested schema.

Abstract: Herein are techniques that extend a software system to embed new guest programing languages (GPLs) that interoperate in a transparent, modular, and configurable way. In embodiments, a computer inserts an implementation of a GPL into a deployment of the system. A command registers the GPL, define subroutines for the GPL, generates a guest virtual environment, and adds a binding of a dependency to a guest module. In an embodiment, a native programing language invokes a guest programing language to cause importing intra- or inter-language dependencies. An embodiment defines a guest object that is implemented in a first GPL and accessed from a second GPL. In an embodiment, dependencies are retrieved from a virtual file system having several alternative implementation mechanisms that include: an archive file or an actual file system, and a memory buffer or a column of a database table.

Abstract: A branch of a main database is created, comprising a copy of the main database schema. A user edits the branch and requests that it be merged back into the main database. A schema diff is generated and used to determine differences between the main database and the edited branch. The merge is performed if it does not create a conflict. A second branch is created and edited by a second user. When the second user indicates to merge the second branch back into the main database, differences between the two branches are determined, relative to the main database. If merging the second branch back into the main database on top of the first branch does not create a conflict, a three-way merge is performed of the first branch, the second branch, and the version of the main database from which the first and second branches were generated.

Abstract: The present disclosure relates to methods and systems for providing validation of transformed electronic data. A source to target comparison service identifies testing configuration parameters and performs a comparison between source and target electronic data to identify anomalies for each transformed data item in the target automated comparison.

Abstract: Methods, systems, and computer readable medium include receiving, from a user device, a request for a digital component, determining an attribute of the user based information provided by the user or information contained in the request, identifying a behavioral model corresponding to the attribute, dynamically altering a presentation of an item depicted by the digital component based on the identified behavioral model, determining that the user corresponds to an underrepresented segment of a user population in a database containing information about the item, and in response, generating a digital component that includes the dynamically altered presentation of the item, solicits feedback from the user regarding the item, and includes a feedback mechanism, updating the database to include the feedback obtained, and modifying presentation of the item when distributed to other users having the attribute of the user based, at least in part, on the feedback obtained.

Abstract: Embodiments of the present invention provide for a method for duplicate determination in a graph. The graph comprises nodes representing entities and edges representing relationships between the entities. Embodiments of the present invention identify two target nodes in the graph. A neighborhood subgraph may be determined for each of the two nodes. The neighborhood subgraph includes the respective node. Embodiments of the present invention can then determine whether the two nodes are duplicates with respect to each other, based on a result of a comparison between the two subgraphs and based on a comparison of the two target nodes of the subgraphs.

Abstract: A data store system may include at least one storage device to store a plurality of data and at least one processor with access to the storage device. The at least one processor may receive a plurality of features associated with an environment. The at least one processor may further generate a state representation of the environment based on the plurality of features. The at least one processor may further generate a plurality of predicted future states of the environment based on the state representation. The at least one processor may further generate at least one action to be performed by the environment based on the plurality of predicted future states. The at least one processor may provide the at least one action to the environment to be performed. A method and computer-readable medium are also disclosed.

Abstract: A method and apparatus for criterion-based retention of data object versions are disclosed. In the method and apparatus, a plurality of keys are sorted in accordance with an ordering scheme, whereby a key of the plurality of keys has an associated version of a data object and a timestamp. The key is inspected in accordance with the ordering scheme to determine based at least in part on the timestamp whether a criterion for performing an action on the associated version of the data object is satisfied. If the criterion is satisfied, a marker key is added to the plurality of keys, whereby the marker key precedes the inspected key according to the ordering scheme and indicates that the criterion is satisfied.

Abstract: Described is a system for providing quick and efficient identification of a desired version of content from an editing history of the content. The system receives a search index identifying versions of content from an editing history of the content. The system sorts the search index according to sort criteria and receives a selection from the sorted search index of a first version of the content and a second version of the content. The system identifies and displays one or more content differences between the first and second versions of the content.

Abstract: A method includes determining whether the first version is an alias with respect to the second version, the alias being defined as an equivalent version of the YANG module. Based at least in part on a determination that the first version is the alias with respect to the second version, a version alias extension is inserted into a revision label of the first and/or second version. Based on a determination that the second version is backwards compatible with respect to the first version, a version backwards compatible extension is inserted into the revision label of the second version. Based at least in part on a determination that the second version is not backwards compatible with respect to the first version, a version non-backwards compatible extension is inserted into the revision label of the second version.

Abstract: An example operation may include one or more of receiving primary data from one or more vehicles, extracting first information from the primary data, creating one or more documents based on the extracted information, generating one or more blockchain transactions based on the one or more documents, and committing the one or more documents to a blockchain.

Abstract: In accordance with an embodiment, described herein is a system and method for use of a dynamic flow process (referred to herein in some examples as Query Processing Dynamic Flow (QPDF)) in a multidimensional database computing environment. The dynamic flow process enables hybrid use of, for example, aggregate storage option, block storage option, or other types of storage containers, and provides a common flow to process a received input query in bottom-up mode. The approach can be used to reduce the size of the cube, which provides for efficient calculation of dynamic members.

Abstract: Methods, systems, apparatuses, and computer program products are directed to the generation of a global index structure. Agents executing on different data sources locally pre-process (e.g., format, filter, compress, encode, serialize etc.) data generated thereby and index such data. The agents also manage the resources thereof to perform the pre-processing and indexing operations. Each index generated by an agent is formatted as a plurality of index nodes. The index nodes and pre-processed data are provided to backend server(s) that maintain the global index structure and store the data in a globally distributed file system, which aid in unexpected disaster recovery. The backend server(s) generate the global index structure based on the index nodes. As new index nodes are received by the backend servers, the backend servers merge the newly-received index nodes with the global index structure. Global index structure traversal techniques for retrieving search keys are also described herein.

Abstract: A method for pre-utilizing tables before refresh includes selecting a query for execution in a data analytics application and identifying a table specified by the query, for instance a materialized table. Another operation includes computing an encoding, such as a hash value, for at least one portion of the identified table. Another operation includes comparing the computed encoding to a pre-stored encoding for the at least one portion of the identified table. On the condition that the computed encoding is identical to the pre-stored encoding, the operations include utilizing the identified table in executing the query in lieu of re-materializing the identified table. Otherwise, on the condition that the computed encoding differs from the pre-stored encoding, the operations include re-materializing the identified table before returning the results of the query.

Abstract: A database index management system uses one or more machine learning models to analyze a query log in relation to a database. A machine learning model may identify a query pattern and/or a change in the query pattern from the query log, identify a column associated with the query pattern, and identify an addition, removal, or modification of an index related to the identified column. The database index management system may perform one or more additions, removals or modifications of indices of the database based on query patterns identified in the query log. The database index management system continuously improves database performance in response to changing database usage patterns over time.

Abstract: Methods, systems, and computer-readable media for indexing partitions using distributed Bloom filters are disclosed. A data indexing system generates a plurality of indices for a plurality of partitions in a distributed object store. The indices comprise a plurality of Bloom filters. An individual one of the Bloom filters corresponds to one or more fields of an individual one of the partitions. Using the Bloom filters, the data indexing system determines a first portion of the partitions that possibly comprise a value and a second portion of the partitions that do not comprise the value. Based (at least in part) on a scan of the first portion of the partitions and not the second portion of the partitions, the data indexing system determines one or more partitions of the first portion of the partitions that comprise the value.

Abstract: Data can originate from at least one device. The data can be received by at least one network element corresponding to a network. The data can be sent over the network by the at least one device. The data can be analyzed to determine a presence of one or more keywords or key phrases in the data received. A determination can be performed to determine whether or not to filter or block the data. The data can be blocked or filtered according to the determination.

Abstract: A method may comprise comparing a first data set with a second data set, the first data set associating a first plurality of names with a first plurality of roles, and the second data set associating a second plurality of names with a second plurality of roles. The method may further comprise generating a third data set based on an outcome of the comparing, such that the third data set associates a subset of the first plurality of names with a subset of the second plurality of roles. Apparatuses, methods, and software for performing these and other functions are also described.

Abstract: Methods for data quality analysis and aggregation in a building automation system and corresponding systems and computer-readable mediums. A method includes receiving input data and receiving a configuration file that defines data quality (DQ) processes to be performed on the input data. The method includes dynamically building a configurable pipeline based on the configuration file, the pipeline including one or more Data Quality Indicator (DQI) or Data Quality Aggregation (DQA) process components from a DQ core library. The method includes performing DQ processes on the input data, including executing each of the DQI or DQA process components included in the pipeline, producing one or more DQ results based on the DQ processes, and returning the one or more DQ results.

Abstract: Embodiments are directed to methods and systems for capturing data of a database record related to an event. Each record can comprise a record of a service provided to a consumer by a service provider of a plurality of service providers and a records management and processing system can comprise an intermediary between systems of the plurality of service providers and systems of a plurality of responsible entities. The records management and processing system can predict possible missing data in one or more records of the plurality of records in the database, select at least one record of the one or more records of the plurality of records predicted to have possible missing data, and initiate, for each selected record, a workflow for further processing of each selected record. The further processing can be directed to collecting the missing data.

Abstract: A method comprising: receiving a plurality of pairs of queries associated with a database, wherein the queries in each pair in the plurality of pairs of queries have an identical FROM clause; at a training stage, training a machine learning model on a training set comprising: (i) the plurality of pairs of queries, and (ii) labels associated with containment rates between each of the pairs of queries over the database; and at an inference stage, applying the trained machine learning model to a pair of target queries, to estimate containment rates between the target pair of queries over the database.

Abstract: Disclosed are systems and methods for improving file and application management supported by or configured with an installed application program or platform running the client's device or on the cloud (or on a server). The present disclosure describes computer systems and methods for an application that provides a single-touch/input, session management function that allows a user to store all desired information related to open files and programs. The desired information also includes status information related to the open files and programs, whereby a user can “pause” working on the files/programs by closing the files/programs, and when executing the disclosed application, the previous status of the files/programs can be reloaded, enabling the user to continue working seamlessly.

Abstract: Disclosed herein are system, method, and computer program product embodiments for providing a natural, pen-and-paper user experience that harnesses cutting edge artificial intelligence and machine learning to enhance user interactions with data in a suite of software applications. The pen-and-paper user experience may mimic the time-honored human tradition of writing with pen and paper, allowing users to work in an intuitive, productive, familiar fashion, while incorporating artificial intelligence and machine learning techniques to interpret a user's natural language and other pen-strokes in order to better interpret a user's natural language and resolve ambiguity in user inputs. A pen-and-paper-based user experience may be extended and enhanced to allow a user to interact with a suite of applications, a launchpad, a key performance indicator tool, a digital boardroom, or other application using the same pen-and-paper-based design paradigm.

Abstract: Systems and methods for supporting rollback of changes made to target systems via an integration platform. Systems and methods can support reverting changes made to target applications via an integration platform (e.g., integration platform as a service (iPaaS)) with the help of a rollback activity. In order to aid the development and design of integration orchestrations, the integration platform can provide suggested rollback actions. In case of a failure in integration runtime, this rollback activity will revert changes made to the target applications prior to the point of fault. This helps ensure that systems remain in consistent state.

Abstract: A machine-learning model may be previously trained with a supervised learning algorithm to identify whether a pair of labels provided as input are similar. A locality sensitive hashing forest (LSH) may be generated for the set of candidate labels. When a user later identifies an input label (e.g., by search query, by interface selection, etc.) the input label may be used to query the LSH forest to identify a subset of the candidate labels. This subset may be used to generate respective pairs comprising the input label, one of the subset candidate labels, and a corresponding feature set generated for the pair. This data may be provided to the model to identify a degree to which the pair of labels are similar. The user may be provided one or more recommendations including similar terms identified from the model's output.

Abstract: Certain embodiments of the present disclosure provide techniques for detecting anomalous activity in a computing system. The method generally includes receiving a request to perform an action in a computing system. The request is added to a historical time-series data set. A portion of the historical time-series data set is selected for use in determining whether the received request is an anomalous request, and a set of previously identified outliers are removed from the selected portion of the historical time-series data set. An anomaly score is calculated based on a statistical analysis of the received request and the selected portion of the historical time-series data set, wherein the anomaly score comprises a predicted number of operations executed to isolate the received request from the selected portion of the historical time-series data set. One or more actions are taken to process the received request based on the calculated anomaly score.

Abstract: Systems, methods, and media for laboratory testing services are disclosed. A request for an electronic form can be received from an electronic device. A customized electronic form can be sent to the electronic device. The electronic form may be customized based at least in part on a healthcare provider associated with the request. At least one laboratory test may be requested to be ordered for at least one patient associated with the healthcare provider. At least one predefined rule may be applied to the requested order to verify that the order is valid. At least one laboratory can be selected to perform the ordered laboratory tests. Specimen collection information may be sent to a collection facility and can be based at least in part on rules or preferences of a lab selected to perform a laboratory test. Customized test reports can be provided to a healthcare provider.

Abstract: In one embodiment, a method includes, by a client system of a user of an online social network, sending, to one or more computing devices of the online social network, a text post inputted by the user. The text post is associated with a query. The method includes receiving, from the one or more computing devices in response to the text post, an initial recommendation list. The initial recommendation list includes references to one or more objects referenced in comments associated with one or more prior posts associated with the query. The method includes sending, to the one or more computing devices, a request for updates to the initial recommendation list. Moreover, the method includes receiving, from the one or more computing devices in response to the request, an updated recommendation list comprising references to one or more objects referenced in comments associated with the text post.

Abstract: A computing machine performs a correlation search against KPI data for one or more services using a selection criteria and a triggering condition. When the triggering condition is satisfied a notable event or incident is created and information about the notable event is presented using a user interface that may have interactive elements.

Abstract: An interactive user interface for displaying projects comprising a collection of links specifying data to be displayed from a plurality of different applications and/or data sources. When loading a project for display, links are automatically parsed to identify the application and/or data source they are associated with. Retrieved data associated with the links is displayed in a format based upon that of their native application. The data may be displayed in an interactive format, allowing the user to change or manipulate the data in a manner that would be possible in the data's native application. A project may be expressed as a “project link,” comprising a text string, wherein the links of the assets associated with the project are included or embedded within the text string, and which may be shared between different users, and may function as a snapshot of the project.

Abstract: A method for accessing listings in a data exchange includes creating a first listing in a data exchange, the first listing referencing a first database of a plurality of databases and specifying identity-based sharing of the first database, creating a second listing in the data exchange, the second listing referencing a second database of the plurality of databases and data of the first database shared according to the identity-based sharing of the first database, and receiving an instruction from a user of the data exchange, the instruction referencing the second listing and instructing the addition of the second listing to a set of consumed data shares accessible by the user.

Abstract: Methods and apparatuses related to federated search of multiple sources with conflict resolution are disclosed. A method may comprise obtaining a set of data ontologies (e.g., types, properties, and links) associated with a plurality of heterogeneous data sources; receiving a selection of a graph comprising a plurality of graph nodes connected by one or more graph edges; and transforming the graph into one or more search queries across the plurality of heterogeneous data sources. A method may comprise obtaining a first data object as a result of executing a first search query across a plurality of heterogeneous data sources; resolving, based on one or more resolution rules, at least the first data object with a repository data object; deduplicating data associated with at least the first data object and the repository data object prior to storing the deduplicated data in a repository that has a particular data model.

Abstract: A system includes a processor configured to create a rule repository instance. The rule repository instance specifies a plurality of different procedures that facilitate specifying a sequence of transformer rules by cascading each of the procedures together using a dot notation format. The processor configures the rule repository instance with a plurality of transformer rules using the dot notation format. The processor receives data from a file arranged according to a first structured data format. The processor executes the sequence of transformer rules to convert data elements in the file to a second structured data format. The processor then provides for display or storage the data as converted into the second structured data format by the sequence of transformer rules.

Abstract: The present disclosure relates to systems, non-transitory computer-readable media, and methods for consistently providing accurate versions of digital data within a distributed server network utilizing session-level user tokens. For example, in one or more embodiments, the disclosed systems generate a session-level user token that is specific to a client computing device participating in a session and in response to receiving a write request from the client computing device. As the client computing device initiates additional requests to read and write digital data from the distributed server network during the session, the disclosed systems maintain current version information within the session-level user token, and utilize this version information to verify that data provided to the client computing device from the distributed server network is accurate at the session-level.

Abstract: A system and method includes using a queue with reduce operations. A method can include, responsive to generation of one or more markers by a first node or a second node, causing a submission of one or more markers to a queue associated with a computing cluster. Additionally, responsive to a determination that the first node has completed a first reduce operation, directing the first node to perform a first copy operation to copy first data identified by a first marker of the one or more markers in the queue, where the first copy operation is performed concurrently with the second reduce operation.

Abstract: A system for propagating an identity state change set about shared identities may include a plurality of systems of record (SORs), and a management server cooperating with the plurality of SORs and configured to: detect discrete Create-Retrieve-Update-Delete (CRUD) operations on a given SOR related to at least one shared identity to generate an identity state change set corresponding to a current state of the at least one shared identity; transact the identity state change set, with associated metadata, to a distributed immutable long-term storage as a current transaction; propagate the identity state change set and associated metadata to replicate a current state of the at least one shared identity as of the current transaction to at least one domain cache instance, and; synchronize the current state of the at least one shared identity across the plurality of SORs from the at least one domain cache instance.

Abstract: Various methods, apparatuses/systems, and media for application of an N-dimensional hypercube datatype for automatically generating a data structure are provided. A database stores a plurality of data each associated with a corresponding application and each including metadata describing information about the data. A processor creates taxonomies describing data concepts associated with the metadata and store the taxonomies onto the database; receive the metadata and the taxonomies from the database via a communication network; automatically generate a cube set including a set of N-dimensional hypercubes from the received metadata to represent the metadata describing the information about the data; automatically generate a map from the cube set to express data quality checks and rules that apply to nodes in the map; and apply the data quality checks and rules to the received metadata to automatically generate a data structure.

Abstract: An event waveform extracting unit (3) extracts an event waveform from time-series data. A co-occurrence rate calculating unit (4) calculates co-occurrence rates of event waveforms among the time-series data. A grouping unit (5) classifies the time-series data into groups depending the co-occurrence rates of the event waveforms. An event information generating unit (6) determines the time at which the periods during which event waveforms occur overlap with each other among the time-series data included in each group, and generates event information identifying an event related to the event waveforms on the basis of the determined time.