Invention Grant
- Patent Title: Word category estimation apparatus, word category estimation method, speech recognition apparatus, speech recognition method, program, and recording medium
- Patent Title (中): 词类估计装置，词类估计方法，语音识别装置，语音识别方法，程序和记录介质
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Application No.: US12809199Application Date: 2008-12-19
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Publication No.: US08583436B2Publication Date: 2013-11-12
- Inventor: Hitoshi Yamamoto , Kiyokazu Miki
- Applicant: Hitoshi Yamamoto , Kiyokazu Miki
- Applicant Address: JP Tokyo
- Assignee: NEC Corporation
- Current Assignee: NEC Corporation
- Current Assignee Address: JP Tokyo
- Priority: JP2007-330154 20071221
- International Application: PCT/JP2008/073192 WO 20081219
- International Announcement: WO2009/081861 WO 20090702
- Main IPC: G06F17/27
- IPC: G06F17/27 ; G10L15/00 ; G10L15/04 ; G10L15/18 ; H04M1/64
Abstract:
A word category estimation apparatus (100) includes a word category model (5) which is formed from a probability model having a plurality of kinds of information about a word category as features, and includes information about an entire word category graph as at least one of the features. A word category estimation unit (4) receives the word category graph of a speech recognition hypothesis to be processed, computes scores by referring to the word category model for respective arcs that form the word category graph, and outputs a word category sequence candidate based on the scores.
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