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Method and system for searching documents with numbers

  • US 7,010,520 B2
  • Filed: 04/26/2002
  • Issued: 03/07/2006
  • Est. Priority Date: 04/26/2002
  • Status: Active Grant
First Claim
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1. A computer-implemented method for searching documents comprising:

  • receiving a query having at least one query number qi but not necessarily specifying an attribute name or unit for the query number the query number qi being only an approximation of a desired attribute numeric value;

    for at least one document, matching each number qi with a document number nm, each document number being a number contained in the document, such that a distance score is minimized; and

    based on the distance scores, returning at least one document in response to the query wherein the documents are selected from a set of documents, and the method further comprises limiting the number of documents in the set that are processed in the matching act using at least one lower bound on at least one distance score.

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