Chinese Spelling Error Detection Using a Fusion Lattice LSTM
Table 4. F1 against various error types
['[EMPTY]', 'homophone', 'near-homo', 'Others']
However, adding pinyin has no obvious effect for other type of errors, because phonological errors are caused by the use of the pinyin input method. It has a close relationship with pinyin, so adding pinyin information can significantly improve the performance. However, other errors, such as visual errors, are caused by OCR recognition and have little relation with pinyin.