| 摘要 |
PROBLEM TO BE SOLVED: To provide a voice interactive device, capable of reducing the probability of repeated occurrence of false recognition even if words having a similar phoneme string sequence are generated. SOLUTION: The voice interactive device includes a voice recognition part 102 which compares a speech by a user with vocabulary of a recognition dictionary 103 to acquire at least one combination of recognition candidates as a recognition result; an understanding part 104 which generates an understanding state of a system based on the recognition result and determines a control task intended by the user from the understanding state; and an answer generation part 106 which returns an answer to the user based on the control task. The device further includes a recognition feature extraction part 109 which monitors a series of conversations leading to control task attainment to extract a combination related to the recognition result as a recognition pattern, and extracts a control task related to the recognition pattern; and a dictionary control part 11 which prioritizes the control task based on the recognition pattern and the control task for the recognition pattern. COPYRIGHT: (C)2009,JPO&INPIT
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