Dynamic diversity-enhanced similarity retrieval system and method
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United States of America Patent
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Jul 20, 2010
Grant Date -
May 25, 2006
app pub date -
Dec 22, 2005
filing date -
Jun 23, 2003
priority date (Note) -
Expired
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Abstract
A conversational recommender system retrieves k cases (3) and generates a structure for user feedback (4). The structure includes a list of critique units for each of which the user can specify a value range. It also generates compound critiques, each being a combination of features and value ranges presented together. An explanation of a compound critique can be generated in response to a user request. The system determines (7), from one cycle of a session to the next, if a preference has been carried. If so, a re-focus function implementing diversity is used for retrieval in the next cycle. If not, a refine function implementary similarity-based retrieval is used for the next cycle of the session.
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