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Document classifiers and methods for document classification

  • US 7,499,591 B2
  • Filed: 03/25/2005
  • Issued: 03/03/2009
  • Est. Priority Date: 03/25/2005
  • Status: Expired due to Fees
First Claim
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1. A method of classifying a document comprising:

  • using a processor (or computer) to perform the steps of;

    classifying said document using output from one or more of said classifier engines based on a comparison of one or more metrics for each classifier engine;

    using a set of training documents to determine a precision value for each classifier engine;

    identifying a highest precision value and a second highest precision value;

    determining if said highest precision value is greater than said second highest precision value by a predetermined amount;

    if so, using output from the classifier engine having said highest precision value to classify said document; and

    if not, generating for each classifier engine, a list of probabilities of said document being classified by each classifier engine into each one of a group of possible classes, summing said probabilities for each class, and classifying said document into the class with the largest sum of probabilities.

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