Methods and systems for creating and using an adaptive...

Details Methods and systems for creating and using an adaptive... Methods and systems for creating and using an adaptive...

G - Physics

06

F

G06F 17/27 (2006.01) G06F 17/30 (2006.01)

Patent

CA 2750612

Methods and systems are provided for creating an adaptive thesaurus. A term pair including an index term and an expansion term is received. A recall gain, an expansion independence, and a semantic similarity of the term pair are calculated us-ing a processor. Whether to store the term pair is determined based on the recall gain, the expansion independence, and the seman-tic similarity. The term pair is stored based on the determination. Methods and systems are provided for searching using an adap-tive thesaurus. A search query including a query term is received. An expansion term stored in association with an index term matching the query term in the adaptive thesaurus is retrieved. Using a processor, the search query is expanded using the expan-sion term based on a recall gain, an expansion independence, and a semantic similarity.

L'invention porte sur des procédés et des systèmes de création d'un thésaurus adaptatif. Une paire de termes comprenant un terme d'index et un terme d'expansion est reçue. Un gain de rappel, une indépendance d'expansion et une similarité sémantique de la paire de termes sont calculés à l'aide d'un processeur. Le choix de stocker ou non la paire de termes est déterminé sur la base du gain de rappel, de l'indépendance d'expansion et de la similarité sémantique. La paire de termes est stockée sur la base de la détermination. L'invention porte également sur des procédés et des systèmes de recherche utilisant un thésaurus adaptatif. Une interrogation de recherche comprenant un terme d'interrogation est reçue. Un terme d'expansion stocké en association avec un terme d'index correspondant au terme d'interrogation dans le thésaurus adaptatif est extrait. A l'aide d'un processeur, l'interrogation de recherche est étendue à l'aide du terme d'expansion sur la base d'un gain de rappel, d'une indépendance d'expansion et d'une similarité sémantique.

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