| Presentation | 2002/12/13 Unsupervised Language Model Adaptation for Lecture Speech Recognition Hiroaki NANJO, Tatsuya KAWAHARA, Atsushi YAMADA, Kiyotaka UCHIMOTO, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper addresses speaker adaptation of language model in large vocabulary spontaneous speech recognition. In spontaneous speech, the expression and pronunciation of words vary a lot depending on the speaker and topic. Therefore, we present unsupervised methods of language model adaptation to a specific speaker by (1) making direct use of the initial recognition result for generating an enhanced model, and (2) selecting similar texts for adaptation utterance by utterance. We also investigate the pronunciation variation modeling and its adaptation in the same framework. It is confirmed that all proposed adaptation methods and their combinations reduced the perplexity and word error rate in transcription of real lectures. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | automatic speech recognition / spontaneous speech / lecture speech / language model / unsupervised adaptation |
| Paper # | NLC2002-75 |
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| Conference Information | |
| Committee | NLC |
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| Conference Date | 2002/12/13(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) | Unsupervised Language Model Adaptation for Lecture Speech Recognition |
| Sub Title (in English) | |
| Keyword(1) | automatic speech recognition |
| Keyword(2) | spontaneous speech |
| Keyword(3) | lecture speech |
| Keyword(4) | language model |
| Keyword(5) | unsupervised adaptation |
| 1st Author's Name | Hiroaki NANJO |
| 1st Author's Affiliation | Graduate School of Informatics, Kyoto University() |
| 2nd Author's Name | Tatsuya KAWAHARA |
| 2nd Author's Affiliation | Graduate School of Informatics, Kyoto University |
| 3rd Author's Name | Atsushi YAMADA |
| 3rd Author's Affiliation | Advanced Software Technology & Mechatronics Research Institute of KYOTO (ASTEM):Comunications Research Laboratory |
| 4th Author's Name | Kiyotaka UCHIMOTO |
| 4th Author's Affiliation | Comunications Research Laboratory |
| Date | 2002/12/13 |
| Paper # | NLC2002-75 |
| Volume (vol) | vol.102 |
| Number (no) | 528 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |