| Item type |
文献 / Documents(1) |
| 公開日 |
2025-03-26 |
| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版社版DOI |
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関連識別子 |
https://doi.org/10.1186/s13636-024-00360-8 |
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関連名称 |
10.1186/s13636-024-00360-8 |
| 出版タイプ |
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|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| タイトル |
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|
タイトル |
Recognition of target domain Japanese speech using language model replacement |
| 著者 |
Mori, Daiki
Ohta, Kengo
西村, 良太
Ogawa, Atsunori
北岡, 教英
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| 抄録 |
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内容記述 |
End-to-end (E2E) automatic speech recognition (ASR) models, which consist of deep learning models, are able to perform ASR tasks using a single neural network. These models should be trained using a large amount of data; however, collecting speech data which matches the targeted speech domain can be difficult, so speech data is often used that is not an exact match to the target domain, resulting in lower performance. In comparison to speech data, in-domain text data is much easier to obtain. Thus, traditional ASR systems use separately trained language models and HMM-based acoustic models. However, it is difficult to separate language information from an E2E ASR model because the model learns both acoustic and language information in an integrated manner, making it very difficult to create E2E ASR models for specialized target domain which are able to achieve sufficient recognition performance at a reasonable cost. In this paper, we propose a method of replacing the language information within pre-trained E2E ASR models in order to achieve adaptation to a target domain. This is achieved by deleting the “implicit” language information contained within the ASR model by subtracting the source-domain language model trained with a transcription of the ASR’s training data in a logarithmic domain. We then integrate a target domain language model through addition in the logarithmic domain. This subtraction and addition to replace of the language model is based on Bayes’ theorem. In our experiment, we first used two datasets of the Corpus of Spontaneous Japanese (CSJ) to evaluate the effectiveness of our method. We then we evaluated our method using the Japanese Newspaper Article Speech (JNAS) and CSJ corpora, which contain audio data from the read speech and spontaneous speech domain, respectively, to test the effectiveness of our proposed method at bridging the gap between these two language domains. Our results show that our proposed language model replacement method achieved better ASR performance than both non-adapted (baseline) ASR models and ASR models adapted using the conventional Shallow Fusion method. |
| キーワード |
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|
主題 |
End-to-end speech reccognition |
| キーワード |
|
|
主題 |
Implicit language information |
| キーワード |
|
|
主題 |
Language model replacement |
| 書誌情報 |
en : EURASIP Journal on Audio, Speech, and Music Processing
巻 2024,
p. 40,
発行日 2024-07-20
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| 収録物ID |
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収録物識別子タイプ |
EISSN |
|
収録物識別子 |
16874722 |
| 出版者 |
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出版者 |
Springer Nature |
| 出版者 |
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|
出版者 |
BioMed Central |
| 権利情報 |
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|
権利情報 |
This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. |
| EID |
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|
識別子 |
412238 |
| 言語 |
|
|
言語 |
eng |
eurasip_2024_40.pdf (1.8 MB)
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