| Presentation | 2008-12-10 Discriminative Rescoring Based on Minimization of Word Errors for Speech Recognition Akio KOBAYASHI, Takahiro OKU, Shinichi HOMMA, Shoei SATO, Toru IMAI, Tohru TAKAGI, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper describes a novel method of rescoring that reflects tendencies of errors in word hypotheses in speech recognition for transcribing broadcast news. The proposed rescoring assigns penalties to sentence hypotheses according to the recognition error tendencies in the training lattices themselves using a set of weighting factors for feature functions activated by a variety of linguistic contexts. We introduced new techniques to obtain the factors and it is based on the minimization of word errors, which explicitly reduces expected word errors. Moreover, we proposed a new time-dependent-adaptive training scheme, which features similarities among temporal correlated articles of broadcast news. The results of transcribing Japanese broadcast news achieved a word error rate (WER) of 7.4%, which was a 6.3% reduction relative to conventional trigram lattice rescoring. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | lattice rescoring / discriminative training / word error minimization / lanugage model adaptation |
| Paper # | NLC2008-67,SP2008-122 |
| Date of Issue |
| Conference Information | |
| Committee | NLC |
|---|---|
| Conference Date | 2008/12/2(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) |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Discriminative Rescoring Based on Minimization of Word Errors for Speech Recognition |
| Sub Title (in English) | |
| Keyword(1) | lattice rescoring |
| Keyword(2) | discriminative training |
| Keyword(3) | word error minimization |
| Keyword(4) | lanugage model adaptation |
| 1st Author's Name | Akio KOBAYASHI |
| 1st Author's Affiliation | NHK Science & Technical Research Laboratories() |
| 2nd Author's Name | Takahiro OKU |
| 2nd Author's Affiliation | NHK Science & Technical Research Laboratories |
| 3rd Author's Name | Shinichi HOMMA |
| 3rd Author's Affiliation | NHK Science & Technical Research Laboratories |
| 4th Author's Name | Shoei SATO |
| 4th Author's Affiliation | NHK Science & Technical Research Laboratories |
| 5th Author's Name | Toru IMAI |
| 5th Author's Affiliation | NHK Science & Technical Research Laboratories |
| 6th Author's Name | Tohru TAKAGI |
| 6th Author's Affiliation | NHK Science & Technical Research Laboratories |
| Date | 2008-12-10 |
| Paper # | NLC2008-67,SP2008-122 |
| Volume (vol) | vol.108 |
| Number (no) | 337 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |