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Active labeling for spoken language understanding

  • US 7,949,525 B2
  • Filed: 06/16/2009
  • Issued: 05/24/2011
  • Est. Priority Date: 05/29/2003
  • Status: Expired due to Fees
First Claim
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1. A spoken language understanding system comprising:

  • a processor;

    a first module configured to control the processor to classify a set of labeled candidate utterances based on a previously trained classifier and generate classification types for each candidate utterance, each classification type having a respective confidence score;

    a second module configured to control the processor to sort the candidate utterances based on an analysis of the confidence score of each candidate utterance compared to a respective label of the candidate utterance, wherein the analysis is based at least in part on a Kullback-Liebler divergence; and

    a third module configured to control the processor to recheck candidate utterances according to when the Kullback-Liebler divergence is greater than a threshold.

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