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Query string matching method and apparatus

  • US 20040141354A1
  • Filed: 01/28/2003
  • Published: 07/22/2004
  • Est. Priority Date: 01/18/2003
  • Status: Active Grant
First Claim
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1. A method for increasing relevance of database search results, the method comprising:

  • receiving a subject query string;

    determining a trained edit distance between the subject query string and at least one candidate string using trained cost factors derived from a training set of labeled query transformations such that a trained cost factor comprises a sum of a conditional probability for mutations in labeled non-relevant query transformations and a conditional probability for mutations in labeled relevant query transformations; and

    evaluating the at least one candidate string for selection based on the trained edit distance.

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