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MultiCoNER v2: a Large Multilingual dataset for Fine-grained and Noisy Named Entity Recognition

Besnik Fetahu, Zhiyu Chen, Sudipta Kar, Oleg Rokhlenko, Shervin Malmasi


Abstract
We present MULTICONER V2, a dataset for fine-grained Named Entity Recognition covering 33 entity classes across 12 languages, in both monolingual and multilingual settings. This dataset aims to tackle the following practical challenges in NER: (i) effective handling of fine-grained classes that include complex entities like movie titles, and (ii) performance degradation due to noise generated from typing mistakes or OCR errors. The dataset is compiled from open resources like Wikipedia and Wikidata, and is publicly available. Evaluation based on the XLM-RoBERTa baseline highlights the unique challenges posed by MULTICONER V2: (i) the fine-grained taxonomy is challenging, where the scores are low with macro-F1=0.63 (across all languages), and (ii) the corruption strategy significantly impairs performance, with entity corruption resulting in 9% lower performance relative to non-entity corruptions across all languages. This highlights the greater impact of entity noise in contrast to context noise.
Anthology ID:
2023.findings-emnlp.134
Volume:
Findings of the Association for Computational Linguistics: EMNLP 2023
Month:
December
Year:
2023
Address:
Singapore
Editors:
Houda Bouamor, Juan Pino, Kalika Bali
Venue:
Findings
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
2027–2051
Language:
URL:
https://aclanthology.org/2023.findings-emnlp.134
DOI:
10.18653/v1/2023.findings-emnlp.134
Bibkey:
Cite (ACL):
Besnik Fetahu, Zhiyu Chen, Sudipta Kar, Oleg Rokhlenko, and Shervin Malmasi. 2023. MultiCoNER v2: a Large Multilingual dataset for Fine-grained and Noisy Named Entity Recognition. In Findings of the Association for Computational Linguistics: EMNLP 2023, pages 2027–2051, Singapore. Association for Computational Linguistics.
Cite (Informal):
MultiCoNER v2: a Large Multilingual dataset for Fine-grained and Noisy Named Entity Recognition (Fetahu et al., Findings 2023)
Copy Citation:
PDF:
https://aclanthology.org/2023.findings-emnlp.134.pdf