International Business Machines Corporation

Harish Deshmukh

Roger C Raphael

Paul Sherwood Taylor

Sridhar Rajagopalan

Gabriel Valencia

Philip E Parker

Chitrang Shah

Ning Li

Ronald Jason Barber

Bruce Gilbert Lindsay

Eugene Jon Shekita

Frank C Hayes

A data structure is generated containing enumerators for data types of a domain, text forms of the enumerators and context patterns for the text forms. The data structure also includes information extraction rules that are associated with the enumerators. The data structure is updated with additional context patterns and text forms that are identified within a set of documents to which text analytic annotators are to be tuned. The set of documents are analyzed against the updated data structure and additional extraction rules are generated based on the analysis.

Systematic tuning of text analytic annotators

Systematic tuning of text analytic annotators with specialized information

According to one embodiment of the present invention, a system maps one or more virtual relations to a table of a relational database management system. The system generates a structured query language (SQL) statement for the table from a SQL statement for a virtual relation by applying the mapping to one or more elements of the SQL statement for the virtual relation. Embodiments of the present invention further include a method and computer program product for mapping virtual relations to a table in substantially the same manners described above.

Virtualizing schema relations over a single database relation

Provided are techniques for, in response to a source object being changed by a local transaction, generating log records, wherein each of the log records includes a sequence identifier, a source system entity modification timestamp, a target key, a target partition identifier, and values of source properties, wherein the source properties are identified using a target key indicator. The log records to process are selected based on a phase value of each log record, wherein the phase value is one of submitted, in-flight, and source system entity state change complete. One or more disjoint partitions are assigned to each of multiple processing instances. Under control of each of the multiple processing instances, it is determined whether to transmit a log record in the one or more disjoint partitions assigned to said processing instance and, in response to determining that the log record is to be transmitted, the log record is transmitted.

High throughput, reliable replication of transformed data in information systems

Systems, methods and computer program products are disclosed for managing availability of a slave components executing in a distributed system. A master server and a heartbeat protocol may be provided. The heartbeat protocol may define state machines for the master server and/or the slave components. The master server and/or the slave components may act in accordance with the state machines to manage availability of the slave components in the distributed system.

High availability management system for stateless components in a distributed master-slave component topology

Techniques are disclosed for synchronizing a primary data system with an auxiliary data system that processes data for the primary data system. In one embodiment, how current the primary data system and the auxiliary data system are is determined. Requests sent from the primary data system that were not processed by the auxiliary data system are determined. The requests are resent to the auxiliary data system for processing.

Synchronizing an auxiliary data system with a primary data system

Provided are techniques for partitioning a physical index into one or more physical partitions; assigning each of the one or more physical partitions to a node in a cluster of nodes; for each received document, assigning an assigned-doc-ID comprising an integer document identifier; and, in response to assigning the assigned-doc-ID to a document, determining a cut-off of assignment of new documents to a current virtual-index-epoch comprising a first set of physical partitions and placing the new documents into a new virtual-index-epoch comprising a second set of physical partitions by inserting each new document to a specific one of the physical partitions in the second set using one or more functions that direct the placement based on one of the assigned-doc-id, a field value derived from a set of fields obtained from the document, and a combination of the assigned-doc-id and the field value.

Index partition maintenance over monotonically addressed document sequences

Systems, methods and articles of manufacture are disclosed for managing availability of a component executing in a distributed system. The component may have an address space closed to the distributed system. In one embodiment, the component may be initiated. A state of the component may be analyzed to determine the availability of the component. The determined availability may be transmitted to the distributed system. The component may also be restarted responsive to a request from the distributed system to restart the component.

Growing community of inventors

Mountain View, CA, United States of America

Harish Deshmukh