| Presentation | 2008-12-09 Speech Recognition by Topic Models with Continuous/Discontinuous Topic Changes Atsushi SAKO, Yasuo ARIKI, Tomoharu IWATA, Shinji WATANABE, Takaaki HORI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we propose topic models with continuous/discontinuous topic changes, and describe experiments using MIT Open Course Ware corpus. In a real environment, acoustic and language features vary momentarily depending on speakers, speaking styles or topic changes. To accommodate these changes, speech recognition with incremental tracking of changing environments has attracted attention. We propose a language model adaptation technique by Online Topic Model for continuous topic changes, and a technique by Topic HMM for discontinuous topic changes. The experimental results showed the improvements of Word Error Rate with these topic models. Moreover, the proposed methods outperformed the batch adaptation of language model using whole speech recognition results by tracking temporal changes of topics. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Incremental tracking of changing environments / Language model adaptation / Topic model |
| Paper # | NLC2008-33,SP2008-88 |
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| Conference Information | |
| Committee | NLC |
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| Conference Date | 2008/12/2(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) | Speech Recognition by Topic Models with Continuous/Discontinuous Topic Changes |
| Sub Title (in English) | |
| Keyword(1) | Incremental tracking of changing environments |
| Keyword(2) | Language model adaptation |
| Keyword(3) | Topic model |
| 1st Author's Name | Atsushi SAKO |
| 1st Author's Affiliation | Guraduate School of Science and Technology, Kobe University() |
| 2nd Author's Name | Yasuo ARIKI |
| 2nd Author's Affiliation | Guraduate School of Science and Technology, Kobe University |
| 3rd Author's Name | Tomoharu IWATA |
| 3rd Author's Affiliation | NTT Communication Science Laboratories, NTT Corporation |
| 4th Author's Name | Shinji WATANABE |
| 4th Author's Affiliation | NTT Communication Science Laboratories, NTT Corporation |
| 5th Author's Name | Takaaki HORI |
| 5th Author's Affiliation | NTT Communication Science Laboratories, NTT Corporation |
| Date | 2008-12-09 |
| Paper # | NLC2008-33,SP2008-88 |
| Volume (vol) | vol.108 |
| Number (no) | 337 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |