| Presentation | 2003/12/12 Real-Time Confidence Scoring Based on Word Posterior Probability on two-pass search algorithm Akinobu LEE, Tatsuya KAWAHARA, Kiyohiro SHIKANO, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Confidence scoring based on word posterior probability is usually performed as a post process of speech recognition decoding, and also needs a large number of word hypotheses to get enough confidence quality. We propose a simple way of computing the word confidence using estimated posterior probability while decoding. At the word expansion of stack decoding search, the local sentence likelihoods that contains heuristic scores of unreached segment are directly used to compute the posterior probabilities. 'Experimental result showed that, although the likelihoods are not optimal, it can provide slightly better confidence measures compared with N-best lists, while the computation is much faster because no N-best decoding is required. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Confidence measure / search algorithm / word posterior probability / spoken language processing / recognition engine Julius |
| Paper # | NLC2003-97 |
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| Conference Information | |
| Committee | NLC |
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| Conference Date | 2003/12/12(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| 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) | Real-Time Confidence Scoring Based on Word Posterior Probability on two-pass search algorithm |
| Sub Title (in English) | |
| Keyword(1) | Confidence measure |
| Keyword(2) | search algorithm |
| Keyword(3) | word posterior probability |
| Keyword(4) | spoken language processing |
| Keyword(5) | recognition engine Julius |
| 1st Author's Name | Akinobu LEE |
| 1st Author's Affiliation | Graduate School of Information Science, Nara Institute of Science and Technology() |
| 2nd Author's Name | Tatsuya KAWAHARA |
| 2nd Author's Affiliation | School of Informatics, Kyoto University |
| 3rd Author's Name | Kiyohiro SHIKANO |
| 3rd Author's Affiliation | Graduate School of Information Science, Nara Institute of Science and Technology |
| Date | 2003/12/12 |
| Paper # | NLC2003-97 |
| Volume (vol) | vol.103 |
| Number (no) | 518 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |