Error-Robust Retrieval for Chinese Spelling Check

• URL: http://arxiv.org/abs/2211.07843v2
• Date: Sun, 25 Feb 2024 22:17:52 GMT
• Title: Error-Robust Retrieval for Chinese Spelling Check
• Authors: Xunjian Yin and Xinyu Hu and Jin Jiang and Xiaojun Wan
• Abstract summary: Chinese Spelling Check (CSC) aims to detect and correct error tokens in Chinese contexts. Previous methods may not fully leverage the existing datasets. We introduce our plug-and-play retrieval method with error-robust information for Chinese Spelling Check.
• Score: 43.56073620728942
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Chinese Spelling Check (CSC) aims to detect and correct error tokens in Chinese contexts, which has a wide range of applications. However, it is confronted with the challenges of insufficient annotated data and the issue that previous methods may actually not fully leverage the existing datasets. In this paper, we introduce our plug-and-play retrieval method with error-robust information for Chinese Spelling Check (RERIC), which can be directly applied to existing CSC models. The datastore for retrieval is built completely based on the training data, with elaborate designs according to the characteristics of CSC. Specifically, we employ multimodal representations that fuse phonetic, morphologic, and contextual information in the calculation of query and key during retrieval to enhance robustness against potential errors. Furthermore, in order to better judge the retrieved candidates, the n-gram surrounding the token to be checked is regarded as the value and utilized for specific reranking. The experiment results on the SIGHAN benchmarks demonstrate that our proposed method achieves substantial improvements over existing work.

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