Low-Resource Sequence Labeling via Unsupervised Multilingual Contextualized Representations

Zuyi Bao, Rui Huang, Chen Li, Kenny Zhu


Abstract
Previous work on cross-lingual sequence labeling tasks either requires parallel data or bridges the two languages through word-by-word matching. Such requirements and assumptions are infeasible for most languages, especially for languages with large linguistic distances, e.g., English and Chinese. In this work, we propose a Multilingual Language Model with deep semantic Alignment (MLMA) to generate language-independent representations for cross-lingual sequence labeling. Our methods require only monolingual corpora with no bilingual resources at all and take advantage of deep contextualized representations. Experimental results show that our approach achieves new state-of-the-art NER and POS performance across European languages, and is also effective on distant language pairs such as English and Chinese.
Anthology ID:
D19-1095
Volume:
Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing and the 9th International Joint Conference on Natural Language Processing (EMNLP-IJCNLP)
Month:
November
Year:
2019
Address:
Hong Kong, China
Editors:
Kentaro Inui, Jing Jiang, Vincent Ng, Xiaojun Wan
Venues:
EMNLP | IJCNLP
SIG:
SIGDAT
Publisher:
Association for Computational Linguistics
Note:
Pages:
1028–1039
Language:
URL:
https://aclanthology.org/D19-1095
DOI:
10.18653/v1/D19-1095
Bibkey:
Cite (ACL):
Zuyi Bao, Rui Huang, Chen Li, and Kenny Zhu. 2019. Low-Resource Sequence Labeling via Unsupervised Multilingual Contextualized Representations. In Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing and the 9th International Joint Conference on Natural Language Processing (EMNLP-IJCNLP), pages 1028–1039, Hong Kong, China. Association for Computational Linguistics.
Cite (Informal):
Low-Resource Sequence Labeling via Unsupervised Multilingual Contextualized Representations (Bao et al., EMNLP-IJCNLP 2019)
Copy Citation:
PDF:
https://aclanthology.org/D19-1095.pdf
Code
 baozuyi/MLMA