A Flat-Span Contrastive Learning Method for Nested Named Entity Recognition

Yaodi Liu,Kun Zhang,Rong Tong, Chenxi Cai, Dianying Chen, Xiaohe Wu

2024 INTERNATIONAL CONFERENCE ON ASIAN LANGUAGE PROCESSING, IALP 2024（2024）

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Key words

nested named entity recognition,sequence labeling,span classification,contrastive learning,multi-task learning

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