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Language model generation and accumulation device, speech recognition device, language model creation method, and speech recognition method

  • US 20050256715A1
  • Filed: 10/03/2003
  • Published: 11/17/2005
  • Est. Priority Date: 10/08/2002
  • Status: Abandoned Application
First Claim
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1. A language model generation and accumulation apparatus that generates and accumulates language models for speech recognition, the apparatus comprising:

  • a higher-level N-gram language model generation and accumulation unit operable to generate and accumulate a higher-level N-gram language model that is obtained by modeling each of a plurality of texts as a sequence of words that includes a word string class having a specific linguistic property; and

    a lower-level N-gram language model generation and accumulation unit operable to generate and accumulate a lower-level N-gram language model that is obtained by modeling a sequence of words within the word string class.

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