Multilingual and Zero-Shot is Closing in on Monolingual Web Register Classification

Samuel Rönnqvist, Valtteri Skantsi, Miika Oinonen, Veronika Laippala


Abstract
This article studies register classification of documents from the unrestricted web, such as news articles or opinion blogs, in a multilingual setting, exploring both the benefit of training on multiple languages and the capabilities for zero-shot cross-lingual transfer. While the wide range of linguistic variation found on the web poses challenges for register classification, recent studies have shown that good levels of cross-lingual transfer from the extensive English CORE corpus to other languages can be achieved. In this study, we show that training on multiple languages 1) benefits languages with limited amounts of register-annotated data, 2) on average achieves performance on par with monolingual models, and 3) greatly improves upon previous zero-shot results in Finnish, French and Swedish. The best results are achieved with the multilingual XLM-R model. As data, we use the CORE corpus series featuring register annotated data from the unrestricted web.
Anthology ID:
2021.nodalida-main.16
Volume:
Proceedings of the 23rd Nordic Conference on Computational Linguistics (NoDaLiDa)
Month:
May 31--2 June
Year:
2021
Address:
Reykjavik, Iceland (Online)
Venue:
NoDaLiDa
SIG:
Publisher:
Linköping University Electronic Press, Sweden
Note:
Pages:
157–165
Language:
URL:
https://aclanthology.org/2021.nodalida-main.16
DOI:
Bibkey:
Cite (ACL):
Samuel Rönnqvist, Valtteri Skantsi, Miika Oinonen, and Veronika Laippala. 2021. Multilingual and Zero-Shot is Closing in on Monolingual Web Register Classification. In Proceedings of the 23rd Nordic Conference on Computational Linguistics (NoDaLiDa), pages 157–165, Reykjavik, Iceland (Online). Linköping University Electronic Press, Sweden.
Cite (Informal):
Multilingual and Zero-Shot is Closing in on Monolingual Web Register Classification (Rönnqvist et al., NoDaLiDa 2021)
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PDF:
https://aclanthology.org/2021.nodalida-main.16.pdf