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Feedback-Driven Refinement of Mandarin Speech Recognition Result Based on Lattice Modification and Rescoring
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Author(s): Xiangdong Wang (Institute of Computing Technology, Chinese Academy of Sciences, Beijing, China), Yang Yang (Jiangsu Enterprise Information Operation Center, China Telecom Corporation Limited, Nanjing, China), Hong Liu (Institute of Computing Technology, Chinese Academy of Sciences, Beijing, China), Yueliang Qian (Institute of Computing Technology, Chinese Academy of Sciences, Beijing, China)and Duan Jia (Institute of Computing Technology, Chinese Academy of Sciences, Beijing, China)
Copyright: 2020
Pages: 11
Source title:
Cognitive Analytics: Concepts, Methodologies, Tools, and Applications
Source Author(s)/Editor(s): Information Resources Management Association (USA)
DOI: 10.4018/978-1-7998-2460-2.ch062
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Abstract
In real world applications of speech recognition, recognition errors are inevitable, and manual correction is necessary. This paper presents an approach for the refinement of Mandarin speech recognition result by exploiting user feedback. An interface incorporating character-based candidate lists and feedback-driven updating of the candidate lists is introduced. For dynamic updating of candidate lists, a novel method based on lattice modification and rescoring is proposed. By adding words with similar pronunciations to the candidates next to the corrected character into the lattice and then performing rescoring on the modified lattice, the proposed method can improve the accuracy of the candidate lists even if the correct characters are not in the original lattice, with much lower computational cost than that of the speech re-recognition methods. Experimental results show that the proposed method can reduce 24.03% of user inputs and improve average candidate rank by 25.31%.
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