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System for processing textual inputs using natural language processing techniques

  • US 6,901,399 B1
  • Filed: 06/16/1998
  • Issued: 05/31/2005
  • Est. Priority Date: 07/22/1997
  • Status: Expired due to Term
First Claim
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1. A method of determining similar ity between first and second textual inputs, the method comprising:

  • obtaining a first set of logical forms based on the first textual input;

    obtaining a second set of logical forms based on the second textual input;

    comparing the first and second sets of logical forms; and

    determining similarity between the first and second textual inputs based on the step of comparing.

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