LANGUAGE MODEL SCORE LOOK-AHEAD VALUE IMPARTING DEVICE, LANGUAGE MODEL SCORE LOOK-AHEAD VALUE IMPARTING METHOD, AND PROGRAM STORAGE MEDIUM
First Claim
1. A language model score look-ahead value imparting device that comprises:
- a word dictionary that defines a phoneme string of a word;
a language model that imparts a score of appearance easiness of a word; and
a smoothing language model score look-ahead value calculation unit that obtains a language model score look-ahead value at each phoneme in the word from the phoneme string of the word defined by the word dictionary and the score defined by the language model so that the language model score look-ahead values are prevented from concentrating on the beginning of the word.
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Accused Products
Abstract
A speech recognition apparatus that performs frame synchronous beam search by using a language model score look-ahead value prevents the pruning of a correct answer hypothesis while suppressing an increase in the number of hypotheses. A language model score look-ahead value imparting device 108 is provided with a word dictionary 203 that defines a phoneme string of a word, a language model 202 that imparts a score of appearance easiness of a word, and a smoothing language model score look-ahead value calculation means 201. The smoothing language model score look-ahead value calculation means 201 obtains a language model score look-ahead value at each phoneme in the word from the phoneme string of the word defined by the word dictionary 203 and the language model score defined by the language model 202 so that the language model score look-ahead values are prevented from concentrating on the beginning of the word.
39 Citations
32 Claims
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1. A language model score look-ahead value imparting device that comprises:
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a word dictionary that defines a phoneme string of a word; a language model that imparts a score of appearance easiness of a word; and a smoothing language model score look-ahead value calculation unit that obtains a language model score look-ahead value at each phoneme in the word from the phoneme string of the word defined by the word dictionary and the score defined by the language model so that the language model score look-ahead values are prevented from concentrating on the beginning of the word. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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- 10. A language model score look-ahead value imparting method that obtains a language model score look-ahead value at each phoneme in a word from a phoneme string of the word defined by a word dictionary and a score defined by a language model so that the language model score look-ahead values are prevented from concentrating on the beginning of the word.
- 19. A program storage medium that readably records in a computer a language model score look-ahead value imparting program to cause the computer including a memory unit storing a word dictionary to define a phoneme string of a word and a language model to impart a score of appearance easiness of a word to execute a process of obtaining a language model score look-ahead value at each phoneme in the word from the phoneme string of the word defined by the word dictionary and the score defined by the language model so that the language model score look-ahead values are prevented from concentrating on the beginning of the word.
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28. A language model score look-ahead value imparting device that comprises:
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a word dictionary that defines a symbol string of a word indicating an acoustic model string; a language model that imparts a score of appearance easiness of a word; and a smoothing language model score look-ahead value calculation unit that obtains a language model score look-ahead value at each phoneme in the word from the symbol string of the word defined by the word dictionary and the score defined by the language model so that the language model score look-ahead values are prevented from concentrating on the beginning of the word.
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29. A language model score look-ahead value imparting method that obtains a language model score look-ahead value at each phoneme in a word from a symbol string of the word indicating an acoustic model string defined by a word dictionary and a score defined by a language model so that the language model score look-ahead values are prevented from concentrating on the beginning of the word.
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30. A program storage medium that readably records in a computer a language model score look-ahead value imparting program to cause the computer including a memory unit storing a word dictionary to define a symbol string of a word indicating an acoustic model string and a language model to impart a score of appearance easiness of a word to execute a process of obtaining a language model score look-ahead value at each phoneme in the word from the symbol string of the word defined by the word dictionary and the score defined by the language model so that the language model score look-ahead values are prevented from concentrating on the beginning of the word.
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31. A language model score look-ahead value imparting device that comprises:
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a word dictionary that defines a phoneme string of a word; a language model that imparts a score of appearance easiness of a word; and a smoothing language model score look-ahead value calculation means that obtains a language model score look-ahead value at each phoneme in the word from the phoneme string of the word defined by the word dictionary and the score defined by the language model so that the language model score look-ahead values are prevented from concentrating on the beginning of the word.
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32. A language model score look-ahead value imparting device that comprises:
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a word dictionary that defines a symbol string of a word indicating an acoustic model string; a language model that imparts a score of appearance easiness of a word; and a smoothing language model score look-ahead value calculation means that obtains a language model score look-ahead value at each phoneme in the word from the symbol string of the word defined by the word dictionary and the score defined by the language model so that the language model score look-ahead values are prevented from concentrating on the beginning of the word
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Specification