BART based semantic correction for Mandarin automatic speech recognition system

03/26/2021

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by   Yun Zhao, et al.

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Although automatic speech recognition (ASR) systems achieved significantly improvements in recent years, spoken language recognition error occurs which can be easily spotted by human beings. Various language modeling techniques have been developed on post recognition tasks like semantic correction. In this paper, we propose a Transformer based semantic correction method with pretrained BART initialization, Experiments on 10000 hours Mandarin speech dataset show that character error rate (CER) can be effectively reduced by 21.7 demonstrates that actual improvement of our model surpasses what CER indicates.