| 摘要 |
PROBLEM TO BE SOLVED: To provide a device and program for creating a language model that can output kana characters with respect to unknown words, and to provide a device and program for speech recognition that can reduce recognition errors with respect to words before and after the unknown words. SOLUTION: The device 3 for creating the language model creates the language model expressing the unknown words, which are the words not registered in a dictionary used for speech recognition, with kana character strings. The device includes a word storage means 13, a syllable unit dividing means 15, a hidden Markov model estimation means 17, a substring selection means 19, a normalization means 21, an information criterion calculating means 23, and a language model creation means 25. COPYRIGHT: (C)2008,JPO&INPIT
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