NNE: A Dataset for Nested Named Entity Recognition in English Newswire

Ben Hachey; Cecile Paris; James R. Curran; Nicky Ringland; Sarvnaz Karimi; Xiang Dai

NNE: A Dataset for Nested Named Entity Recognition in English Newswire

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arxiv 1906.01359 v1 pith:JUCPNUU2 submitted 2019-06-04 cs.CL

Nicky Ringland , Xiang Dai , Ben Hachey , Sarvnaz Karimi , Cecile Paris , James R. Curran This is my paper · ORCID

classification cs.CL

keywords entitynesteddatasetnamedannotationenglishmentionsnewswire

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Named entity recognition (NER) is widely used in natural language processing applications and downstream tasks. However, most NER tools target flat annotation from popular datasets, eschewing the semantic information available in nested entity mentions. We describe NNE---a fine-grained, nested named entity dataset over the full Wall Street Journal portion of the Penn Treebank (PTB). Our annotation comprises 279,795 mentions of 114 entity types with up to 6 layers of nesting. We hope the public release of this large dataset for English newswire will encourage development of new techniques for nested NER.

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