| Presentation | 2004/12/15 ASR Evaluation Measure and Minimum Bayes-Risk Decoding for Open-domain Speech Understanding Hiroaki NANJO, Tatsuya KAWAHARA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A new evaluation measure of speech recognition and a decoding strategy for keyword-based open-domain speech understanding are presented. Conventionally, WER (word error rate) has been widely used as an evaluation measure of speech recognition, which treats all words in a uniform manner. In this paper, we define a weighted keyword error rate (WKER) which gives a weight on errors from a viewpoint of information retrieval. We first demonstrate that this measure is more appropriate for predicting the performance of key sentence indexing of oral presentations. Then, we formulate a decoding method to minimize WKER.based on Minimum Bayes-Risk (MBR) framework, and show that the decoding method works reasonably for improving WKER and key sentence indexing. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | speech recognition / speech understanding / key sentence extraction / Minimum Bayes-Risk decoding |
| Paper # | NLC2004-82,SP2004-122 |
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| Conference Information | |
| Committee | NLC |
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| Conference Date | 2004/12/15(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) | ASR Evaluation Measure and Minimum Bayes-Risk Decoding for Open-domain Speech Understanding |
| Sub Title (in English) | |
| Keyword(1) | speech recognition |
| Keyword(2) | speech understanding |
| Keyword(3) | key sentence extraction |
| Keyword(4) | Minimum Bayes-Risk decoding |
| 1st Author's Name | Hiroaki NANJO |
| 1st Author's Affiliation | Faculty of Science and Technology, Ryukoku University() |
| 2nd Author's Name | Tatsuya KAWAHARA |
| 2nd Author's Affiliation | Academic Center for Computing and Media Studies, Kyoto University |
| Date | 2004/12/15 |
| Paper # | NLC2004-82,SP2004-122 |
| Volume (vol) | vol.104 |
| Number (no) | 540 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |