| Presentation | 2005/12/14 Performance evaluation of lecture speech recognition by pronunciation variant model using Corpus of Spontaneous Japanese Takuya ABE, Takashi KUSAMA, Chiharu TAKEDA, Masaharu KATOH, Tetsuo KOSAKA, Masaki KOHDA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In recent years, many aggressive approaches for large vocabulary continuous speech recognition system trained on large-scale spontaneous speech database have been investigated. In this paper. we introduce a method of language modeling based on morphological analysis data designed for pronunciation variant. The method was evaluated on the Corpus of Spontaneous Japanese (CSJ) and reduced the word error rate (WER) by about 5% absolute. In addition, unsupervised adaptation of both acoustic and language models was introduced to improve the recognition performance further. The results showed the decrease in WER from 19.96% without adaptation to 15.41% with unsupervised adaptation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | lecture speech recognition / pronunciation variant modeling / N-gram / unsupervised adaptation / Corpus of Spontaneous Japanese |
| Paper # | NLC2005-61,SP2005-94 |
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| Conference Information | |
| Committee | NLC |
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| Conference Date | 2005/12/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Paper Information | |
| Registration To | Natural Language Understanding and Models of Communication (NLC) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Performance evaluation of lecture speech recognition by pronunciation variant model using Corpus of Spontaneous Japanese |
| Sub Title (in English) | |
| Keyword(1) | lecture speech recognition |
| Keyword(2) | pronunciation variant modeling |
| Keyword(3) | N-gram |
| Keyword(4) | unsupervised adaptation |
| Keyword(5) | Corpus of Spontaneous Japanese |
| 1st Author's Name | Takuya ABE |
| 1st Author's Affiliation | Yamagata University() |
| 2nd Author's Name | Takashi KUSAMA |
| 2nd Author's Affiliation | Yamagata University |
| 3rd Author's Name | Chiharu TAKEDA |
| 3rd Author's Affiliation | Yamagata University |
| 4th Author's Name | Masaharu KATOH |
| 4th Author's Affiliation | Yamagata University |
| 5th Author's Name | Tetsuo KOSAKA |
| 5th Author's Affiliation | Yamagata University |
| 6th Author's Name | Masaki KOHDA |
| 6th Author's Affiliation | Yamagata University |
| Date | 2005/12/14 |
| Paper # | NLC2005-61,SP2005-94 |
| Volume (vol) | vol.105 |
| Number (no) | 493 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |