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System and Method for Detecting Repeated Patterns in Dialog Systems

  • US 20090313016A1
  • Filed: 06/13/2008
  • Published: 12/17/2009
  • Est. Priority Date: 06/13/2008
  • Status: Active Grant
First Claim
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1. A method of detecting repeated patterns in a dialog system, comprising:

  • receiving an initial utterance from a user in the dialog sequence as a set of test patterns;

    receiving a correction utterance from the user;

    segmenting the correction utterance into a set of reference patterns;

    extracting feature vectors from the test patterns and the reference patterns;

    comparing each test pattern with each reference pattern using a dynamic time warping process;

    computing distance scores between each reference pattern and each test pattern; and

    identifying test patterns with a distance score that is less than a defined distance threshold as a repeated pattern.

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