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Methods and apparatus for similarity text search based on conceptual indexing

  • US 6,542,889 B1
  • Filed: 01/28/2000
  • Issued: 04/01/2003
  • Est. Priority Date: 01/28/2000
  • Status: Active Grant
First Claim
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1. A method of performing a conceptual similarity search, the method comprising the steps of:

  • generating one or more conceptual word-chains from one or more documents to be used in the conceptual similarity search, wherein at least one of the one or more word-chains comprises a meta-document formed by applying a damping function to a set of the one or more documents, concatenating the document set after application of the damping function, and removing from the meta-document one or more least-weighted words;

    building a conceptual index of documents with the one or more word-chains; and

    evaluating a similarity query using the conceptual index.

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