Multi-head three-affine attention mechanism for nested named entity recognition

Abstract Named Entity Recognition (NER) is commonly treated as a sequence labeling task, which encounters significant challenges when named entities appear in nested forms. Span-based methods, which enumerate all possible spans in a sentence as candidate entities and then classify them, provide a st...

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Autors principals:	Yuelong Zhang, Songpu Li, Tingyao Jiang, Xiaosheng Yu, Xiaolong Li, Tianrui Lyu, Guoqiu He, Wenyuan Zhou, Yingrui Fu, Yangxi Zhang
Format:	Artigo
Idioma:	Inglês
Publicat:	Springer 2026-05-01
Col·lecció:	Discover Artificial Intelligence
Matèries:	Multi-head Tri-affine mechanism Attention mechanism Nested named entity Span
Accés en línia:	https://doi.org/10.1007/s44163-026-01357-2
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