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Tag and correct: high precision post-editing approach to speech recognition errors correction

Ziętkiewicz Tomasz

Annals of Computer Science and Information Systems

2022

Vol. 30

939--942

This paper presents a new approach to the problem of correcting speech recognition errors by means of post-editing. It consists of using a neural sequence tagger that learns how to correct the ASR (Automatic Speech Recognition) hypothesis word by word and a corrector module that applies corrections returned by the tagger.The proposed solution is applicable to any ASR system, regardless of its architecture, and provides high-precision control over errors being corrected. This is especially crucial in production environments, where avoiding the introduction of new mistakes by the error correction model may be more important than the net gain in overall results. The results show that the performance of the proposed error correction models is comparable with previous approaches, while requiring much smaller resources to train, which makes it suitable for industrial applications, where both inference latency and training times are critical factors that limit the use of other techniques.