A Fast and Sound Tagging Method for Discontinuous Named-Entity Recognition

Caio Corro


Abstract
We introduce a novel tagging scheme for discontinuous named entity recognition based on an explicit description of the inner structure of discontinuous mentions. We rely on a weighted finite state automaton for both marginal and maximum a posteriori inference. As such, our method is sound in the sense that (1) well-formedness of predicted tag sequences is ensured via the automaton structure and (2) there is an unambiguous mapping between well-formed sequences of tags and (discontinuous) mentions. We evaluate our approach on three English datasets in the biomedical domain, and report comparable results to state-of-the-art while having a way simpler and faster model.
Anthology ID:
2024.emnlp-main.1087
Volume:
Proceedings of the 2024 Conference on Empirical Methods in Natural Language Processing
Month:
November
Year:
2024
Address:
Miami, Florida, USA
Editors:
Yaser Al-Onaizan, Mohit Bansal, Yun-Nung Chen
Venue:
EMNLP
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
19506–19518
Language:
URL:
https://aclanthology.org/2024.emnlp-main.1087
DOI:
Bibkey:
Cite (ACL):
Caio Corro. 2024. A Fast and Sound Tagging Method for Discontinuous Named-Entity Recognition. In Proceedings of the 2024 Conference on Empirical Methods in Natural Language Processing, pages 19506–19518, Miami, Florida, USA. Association for Computational Linguistics.
Cite (Informal):
A Fast and Sound Tagging Method for Discontinuous Named-Entity Recognition (Corro, EMNLP 2024)
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PDF:
https://aclanthology.org/2024.emnlp-main.1087.pdf