Papers › MECT: Multi-Metadata Embedding based Cross-Transformer for Chinese Named Entity Recognition

MECT: Multi-Metadata Embedding based Cross-Transformer for Chinese Named Entity Recognition

12 Jul 2021ACL 2021 5arXiv:2107.05418archive 2025-07-28

Shuang Wu, Xiaoning Song, ZhenHua Feng

Recently, word enhancement has become very popular for Chinese Named Entity Recognition (NER), reducing segmentation errors and increasing the semantic and boundary information of Chinese words. However, these methods tend to ignore the information of the Chinese character structure after integrating the lexical information. Chinese characters have evolved from pictographs since ancient times, and their structure often reflects more information about the characters. This paper presents a novel Multi-metadata Embedding based Cross-Transformer (MECT) to improve the performance of Chinese NER by fusing the structural information of Chinese characters. Specifically, we use multi-metadata embedding in a two-stream Transformer to integrate Chinese character features with the radical-level embedding. With the structural characteristics of Chinese characters, MECT can better capture the semantic information of Chinese characters for NER. The experimental results obtained on several well-known benchmarking datasets demonstrate the merits and superiority of the proposed MECT method.\footnote{The source code of the proposed method is publicly available at https://github.com/CoderMusou/MECT4CNER.

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BenchmarkingChinese Named Entity RecognitionNERNamed Entity RecognitionNamed Entity Recognition (NER)named-entity-recognition

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Absolute Position EncodingsAdamAttentionBPEDense ConnectionsDropoutLabel SmoothingLayer NormalizationLinear LayerMulti-Head AttentionPosition-Wise Feed-Forward LayerResidual ConnectionSoftmaxTransformer

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