Methods and apparatus for generating query feedback based on co-occurrence patterns
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United States of America Patent
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Nov 6, 2001
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N/A
app pub date -
Jun 4, 1999
filing date -
Jun 4, 1999
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Abstract
An information retrieval system generates query feedback terminology for an input query based on a corpus of documents and the input query. Potential query feedback terms are identified through the corpus of documents for use as query feedback in the information retrieval system. To process a query, which includes at least one query term, co-occurrence signatures for 'N' query feedback terms are generated. An N.times.N matrix of the co-occurrence signatures depict patterns of semantic distance and conceptual proximity among the 'N' query feedback terms. The N.times.N matrix is processed to reduce the number of the entries in the signature to an N.times.M matrix while preserving the co-occurrence distance characteristics among the signatures. Query feedback terms with co-occurrence signatures, which compare with co-occurrence signatures of the query term in a predetermined manner, are selected as query feedback.
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