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A hybrid text normalization system using multi-head self-attention for mandarin

11 November 2019
Junhui Zhang
Junjie Pan
Xiang Yin
Chen Li
Shichao Liu
Yang Zhang
Yuxuan Wang
Zejun Ma
    AI4CE
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Abstract

In this paper, we propose a hybrid text normalization system using multi-head self-attention. The system combines the advantages of a rule-based model and a neural model for text preprocessing tasks. Previous studies in Mandarin text normalization usually use a set of hand-written rules, which are hard to improve on general cases. The idea of our proposed system is motivated by the neural models from recent studies and has a better performance on our internal news corpus. This paper also includes different attempts to deal with imbalanced pattern distribution of the dataset. Overall, the performance of the system is improved by over 1.5% on sentence-level and it has a potential to improve further.

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