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Method and apparatus handling speech recognition errors in spoken dialogue systems

  • US 20050033574A1
  • Filed: 08/05/2004
  • Published: 02/10/2005
  • Est. Priority Date: 08/06/2003
  • Status: Active Grant
First Claim
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1. An apparatus handling speech recognition errors in a spoken dialogue system, comprising:

  • a speech recognition unit extracting a speech feature of a speech signal inputted from a user and finding a phoneme nearest to the speech feature to recognize a word;

    a recognition error determination unit finding a sentence confidence based on a confidence of the recognized word, inspecting a semantic structure of a recognized sentence, and determining whether an error exists in the recognized sentence which is subject to speech recognition according to a predetermined criterion based on both the sentence confidence and a result of inspecting the semantic structure of the recognized sentence; and

    a meta-dialogue generation unit generating a question questioning the user about the recognized sentence based on a content of a portion where the error exists and a type of the error.

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