Abstract: A method includes parsing a regular pathway expression into fragments including an anchored fragment and at least one other fragment. A number of the fragments is based on at least a length limitation of the regular pathway expression. The method includes generating an operator directed acyclic graph (DAG) including non-operator nodes, operator nodes, and a root based on at least the anchored fragment. The method includes removing, from the operator DAG, at least one of the non-operator nodes and connecting a first operator node to a second operator node of the operator nodes. The first operator node includes an edge into the at least one removed non-operator node, and the second operator node includes an edge from the at least one removed node. The method includes executing the operator DAG on a graph database to return a pathway set comprising at least one pathway that satisfies the regular pathway expression.

Abstract: An electrode support structure assembly is provided comprising an electrode support structure including a plurality of splines. Each of the plurality of splines can have a proximal end portion and a distal end portion. The assembly further comprises a first element defining an axis and comprising an outer surface. The outer surface comprises a plurality of slots configured to receive the distal end portion of each of the plurality of splines. The first element is configured such that the distal end portion of each of the plurality of splines may move with respect to each slot. In accordance with some embodiments, the distal end portion of each of the plurality of splines comprises a section configured for engagement with the first element, wherein the section comprises a shoulder.

Abstract: A system for providing irrigation fluid during ablation of tissue includes a catheter, an electrode assembly, at least one thermal sensor adapted to be connected to the catheter, and a control system. The electrode assembly is adapted to be connected to an ablation generator. The thermal sensor is adapted to be operatively connected to an electronic control unit (ECU). The ECU receives as an input temperature measurement data from the thermal sensor; determines a power delivery rate value for the ablation generator responsive to the temperature measurement data; and outputs the power delivery rate value. The control system also delivers irrigation fluid to the irrigated catheter at a first flow rate in a first time period and at a second flow rate in a second time period that is temporally after the first time period. The second flow rate is at least half of the first flow rate.

Abstract: Embodiments of a guide and flexible sleeve for use with catheters for ablation or other medical procedures are disclosed. An exemplary catheter comprises a guide element having a proximal end and a distal end, the distal end configurable in a desired shape. A flexible sleeve is conformable to the guide element so that the flexible sleeve slides over the guide element, the flexible sleeve has a proximal end and a distal end. A controller couples to the flexible sleeve. The controller operates to move the flexible sleeve at least part way between the distal end of the guide element and the proximal end of the guide element. At least one ablation element disposed at the distal end of the flexible sleeve operates to form a substantially continuous ablative lesion when the flexible sleeve is in contact with a contiguous volume of target tissue.

Abstract: A device, method and computer-readable medium for recovering a replica in an operator in a data streaming processing system are disclosed. A method may obtain a checkpoint in an input data stream, determine a maximum-timestamp at the checkpoint in the input data stream, calculate a completeness point that is greater than the maximum-timestamp for an output data stream and process data records from the checkpoint onwards that have a respective timestamp that is greater than or equal to the completeness point that was calculated to generate a new replica to replace a failed replica.

Abstract: A device, method and computer-readable medium for generating unique identification for records in a data streaming processing system are disclosed. A method may collect an identification of a source of a data record, a timestamp of the data record and a count of a number of records a data source has added to the stream with that timestamp, generate a unique identification with the identification of the source of the data record, the timestamp of the data record and the count of the number of records the data source has added to the stream with that timestamp, apply the unique identification to the data record and transmit the data record with the unique identification to a downstream operator within a data stream processing system.

Abstract: A device, method and computer-readable medium for providing failure management of a data streaming processing system are disclosed. A method may detect a first replica of a shard has failed during processing of the stream of data records between a first operator and a second operator, notify the first operator and the second operator that the first replica of the shard has failed, perform a rewind procedure to identify data records that have been processed in the first replica and resume processing of the stream of data records between the first operator and the second operator via a second replica of the shard without processing the data records that have already been processed from the first replica.

Abstract: A method, computer-readable medium, and device for processing a stream of records are disclosed. A method may receive a registration request from a data source to join in providing a plurality of records to the stream, synchronize a timing system with the data source, receive an initial timestamp from the data source, and post the initial timestamp to a plurality of operators or a plurality of subscribers before the data source is allowed to send records into the stream.

Abstract: A system may include a processor, a user input, and memory comprising a graph database and executable instructions. The executable instructions may cause the processor to effectuate operations. The operations include receiving, via the user input, a query comprising a class generalization and pathway variables. The operations include identifying a query class based on at least the class generalization and determining an anchor set based on at least one of the pathway variables. The operations also include translating the pathway variables into a pathway algebraic expression based on the anchor set and the query class and executing the pathway algebraic expression on the graph database to return a pathway set. The class generalization comprises at least one of a component, a class field, or metadata.

Abstract: A method includes receiving, via a processor, a query comprising pathway variables and at least one evaluation time and determining an anchor set based on at least one of the pathway variables. The method also includes translating the pathway variables into a pathway algebraic expression based on the anchor set and the at least one evaluation time, and executing the pathway algebraic expression on a graph database to return a pathway set.

Abstract: Embodiments of a guide and flexible sleeve for use with catheters for ablation or other medical procedures are disclosed. An exemplary catheter comprises a guide element having a proximal end and a distal end, the distal end configurable in a desired shape. A flexible sleeve is conformable to the guide element so that the flexible sleeve slides over the guide element, the flexible sleeve has a proximal end and a distal end. A controller couples to the flexible sleeve. The controller operates to move the flexible sleeve at least part way between the distal end of the guide element and the proximal end of the guide element. At least one ablation element disposed at the distal end of the flexible sleeve operates to form a substantially continuous ablative lesion when the flexible sleeve is in contact with a contiguous volume of target tissue.

Abstract: A method includes parsing a regular pathway expression into fragments including an anchored fragment and at least one other fragment. A number of the fragments is based on at least a length limitation of the regular pathway expression. The method includes generating an operator directed acyclic graph (DAG) including non-operator nodes, operator nodes, and a root based on at least the anchored fragment. The method includes removing, from the operator DAG, at least one of the non-operator nodes and connecting a first operator node to a second operator node of the operator nodes. The first operator node includes an edge into the at least one removed non-operator node, and the second operator node includes an edge from the at least one removed node. The method includes executing the operator DAG on a graph database to return a pathway set comprising at least one pathway that satisfies the regular pathway expression.

Abstract: A method, computer-readable medium, and device for processing a stream of records with a guarantee that each record is accounted for exactly once are disclosed. A method may receive, via a first operator, a data stream having a plurality of records, the plurality of records provided by a plurality of first data sources; allocate the data stream to a plurality of shards of the first operator; process the plurality of records by each shard of the plurality of shards to generate a first output stream, where each shard being implemented with at least two replicas; and output the first output stream to a third operator or a subscriber.

Abstract: A system may include a processor, an input, and memory comprising a graph database and executable instructions. The executable instructions may cause the processor to effectuate operations. The operations may include receiving, via the input, a query comprising pathway variables. The operations may also include determining an anchor set based on at least one of the pathway variables and identifying an evaluation order based on the anchor set. The operations may also include translating the pathway variables into a pathway algebraic expression based on the evaluation order. The operations may include executing the pathway algebraic expression on the graph database to return a pathway set.

Abstract: A system may include a processor and an input adapted to communicate with a network. The system may also include memory storing instructions that cause the processor to effectuate operations. The operations may include detecting a plurality of nodes in the network based on data received at the input and for each of a plurality of nodes, instantiating a node data structure. The operations may also include, for each respective node of the plurality of nodes, identifying an edge indicative of a connection between the respective node and a second node of the plurality of nodes, and instantiating a plurality of edge data structures based on the edges. The operations may also include creating a graph database comprising a layered graph based on data structures, the data structures comprising the plurality of node data structures and the plurality of edge data structures.

Abstract: A family of catheter electrode assemblies includes a flexible circuit having a plurality of electrical traces and a substrate; a ring electrode surrounding the flexible circuit and electrically coupled with at least one of the plurality of electrical traces; and an outer covering extending over at least a portion of the electrode. A non-contact electrode mapping catheter includes an outer tubing having a longitudinal axis, a deployment member, and a plurality of splines, at least one of the plurality of splines comprising a flexible circuit including a plurality of electrical traces and a substrate, a ring electrode surrounding the flexible circuit and electrically coupled with at least one of the plurality of electrical traces; and an outer covering extending over at least a portion of the ring electrode. A method of constructing the family of catheter electrode assemblies is also provided.

Abstract: Concepts and technologies are disclosed herein for managing a distributed database. A data management application can obtain a query. The data management application can analyze the query to determine a number of data structures relevant to the query. The data management application also can analyze data stores storing the data structures and move or assign data structures to other data stores within a distributed database. The movement of the data structures within the distributed database can be based upon greedy algorithms for moving data and/or executing queries.

Abstract: A family of catheter electrode assemblies includes a flexible circuit having a plurality of electrical traces and a substrate; a ring electrode surrounding the flexible circuit and electrically coupled with at least one of the plurality of electrical traces; and an outer covering extending over at least a portion of the electrode. A non-contact electrode mapping catheter includes an outer tubing having a longitudinal axis, a deployment member, and a plurality of splines, at least one of the plurality of splines comprising a flexible circuit including a plurality of electrical traces and a substrate, a ring electrode surrounding the flexible circuit and electrically coupled with at least one of the plurality of electrical traces; and an outer covering extending over at least a portion of the ring electrode. A method of constructing the family of catheter electrode assemblies is also provided.

Abstract: A method, computer readable medium and apparatus for managing a degree of parallelism of streams are disclosed. For example, the method analyzes wireless traffic to determine a profile of the wireless traffic, determines an amount of available processing resources, and manages the degree of parallelism of streams based on the profile and the amount of available processing resources in a probe server.

Abstract: Concepts and technologies are disclosed herein for generating and using temporal metadata partitions. Metadata can be stored in temporal metadata partitions based upon a time range included in the metadata. Furthermore, metadata can be stored in multiple temporal metadata partitions to which the metadata is relevant. As such, metadata can be stored in manner that allows event data to be understood in the context of temporally accurate and/or relevant metadata. Functionality for executing queries of event data and providing results in view of metadata, as well as the merging of multiple temporal metadata partitions also are disclosed.