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SUPPORTING WEB-QUERY EXPANSION EFFICIENTLY USING MULTI-GRANULARITY INDEXING AND QUERY PROCESSING

  • US 20020059161A1
  • Filed: 11/03/1998
  • Published: 05/16/2002
  • Est. Priority Date: 11/03/1998
  • Status: Active Grant
First Claim
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1. A method of querying a database of documents, the database including a preliminary index of the documents, words contained in the documents and associations therebetween, the words in the preliminary index being of an original granularity, the method comprising the steps of:

  • a) replacing the words in the preliminary index with corresponding higher granularity concepts, resulting in a coarser granularity index of reduced index size;

    b) logically expanding a query applied to the database of documents by replacing words of the query, being of the original granularity, with corresponding ones of the higher granularity concepts; and

    c) executing the logically expanded query to retrieve ones of the documents associated, through the coarser granularity index, with the corresponding ones of the higher granularity concepts.

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