Web: http://arxiv.org/abs/2208.04534

Sept. 16, 2022, 1:16 a.m. | Hang Yan, Yu Sun, Xiaonan Li, Xipeng Qiu

cs.CL updates on arXiv.org arxiv.org

Named entity recognition (NER) is the task to detect and classify the entity
spans in the text. When entity spans overlap between each other, this problem
is named as nested NER. Span-based methods have been widely used to tackle the
nested NER. Most of these methods will get a score $n \times n$ matrix, where
$n$ means the length of sentence, and each entry corresponds to a span.
However, previous work ignores spatial relations in the score matrix. In this …

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