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Automatic categorization of documents using document signatures

  • US 6,442,555 B1
  • Filed: 10/26/1999
  • Issued: 08/27/2002
  • Est. Priority Date: 10/26/1999
  • Status: Expired due to Fees
First Claim
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1. A method of automatically classifying electronic documents using document signatures, the method comprising:

  • (a) providing a plurality of document type distributions, each document type distribution describing layout characteristics of an independent document type and including data derived from at least one basis document signature from an independent basis document of the independent document type;

    (b) providing a new electronic document;

    (c) creating an new document signature describing layout characteristics of the new electronic document;

    (d) calculating distances between the new document signature and each of the plurality of document type distributions; and

    (e) selecting, based on the distances calculated in step (d), at least one candidate document type for the new electronic document from among the independent document types described by the plurality of document type distributions.

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