| Presentation | 2000/6/16 SP2000-26 Optimization of language model weight and insertion penalty for word graph generation Toshinori SAIIN, Masaharu KATOH, Akinori ITO, Masaki KOHDA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Language model weight and insertion penalty greatly affects the recognition performance of LVCSR system. In the multi-pass LVCSR system that uses word graph as an intermediate data structure, these decoder parameters should be optimized in order to generate a good word graph. In this paper, a new method to optimize these parameter is proposed. This method uses rescoring of the word graph using bigram LM instead of generating many word graphs for each parameter setting. As the rescoring is much faster than the re-generation of a word graph, the optimization time of the proposed method is much shorter than that of re-generation based one. However, as the method minimizes the first-pass WER, improvement of the second-pass WER is not garanteed. From the experimental result for the newspaper task, it is found that the proposed method doesn't only improve the first-pass WER but also improves the second-pass WER in most case. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | LVCSR / word graph / rescoring / language model weight / insertion penalty |
| Paper # | SP2000-26 |
| Date of Issue |
| Conference Information | |
| Committee | SP |
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| Conference Date | 2000/6/16(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Speech (SP) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | SP2000-26 Optimization of language model weight and insertion penalty for word graph generation |
| Sub Title (in English) | |
| Keyword(1) | LVCSR |
| Keyword(2) | word graph |
| Keyword(3) | rescoring |
| Keyword(4) | language model weight |
| Keyword(5) | insertion penalty |
| 1st Author's Name | Toshinori SAIIN |
| 1st Author's Affiliation | Faculty of Engineering, Yamagata University() |
| 2nd Author's Name | Masaharu KATOH |
| 2nd Author's Affiliation | Faculty of Engineering, Yamagata University |
| 3rd Author's Name | Akinori ITO |
| 3rd Author's Affiliation | Faculty of Engineering, Yamagata University |
| 4th Author's Name | Masaki KOHDA |
| 4th Author's Affiliation | Faculty of Engineering, Yamagata University |
| Date | 2000/6/16 |
| Paper # | SP2000-26 |
| Volume (vol) | vol.100 |
| Number (no) | 137 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |