Yi-Chang Chen


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Integrated Semantic and Phonetic Post-correction for Chinese Speech Recognition
Yi-Chang Chen | Chun-Yen Cheng | Chien-An Chen | Ming-Chieh Sung | Yi-Ren Yeh
Proceedings of the 33rd Conference on Computational Linguistics and Speech Processing (ROCLING 2021)

Due to the recent advances of natural language processing, several works have applied the pre-trained masked language model (MLM) of BERT to the post-correction of speech recognition. However, existing pre-trained models only consider the semantic correction while the phonetic features of words is neglected. The semantic-only post-correction will consequently decrease the performance since homophonic errors are fairly common in Chinese ASR. In this paper, we proposed a novel approach to collectively exploit the contextualized representation and the phonetic information between the error and its replacing candidates to alleviate the error rate of Chinese ASR. Our experiment results on real world speech recognition datasets showed that our proposed method has evidently lower CER than the baseline model, which utilized a pre-trained BERT MLM as the corrector.


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A Framework for Machine Translation Output Combination
Yi-Chang Chen | Chia-Ping Chen
ROCLING 2009 Poster Papers