COMET-QE and Active Learning for Low-Resource Machine Translation

Everlyn Chimoto, Bruce Bassett


Abstract
Active learning aims to deliver maximum benefit when resources are scarce. We use COMET-QE, a reference-free evaluation metric, to select sentences for low-resource neural machine translation. Using Swahili, Kinyarwanda and Spanish for our experiments, we show that COMET-QE significantly outperforms two variants of Round Trip Translation Likelihood (RTTL) and random sentence selection by up to 5 BLEU points for 20k sentences selected by Active Learning on a 30k baseline. This suggests that COMET-QE is a powerful tool for sentence selection in the very low-resource limit.
Anthology ID:
2022.findings-emnlp.348
Volume:
Findings of the Association for Computational Linguistics: EMNLP 2022
Month:
December
Year:
2022
Address:
Abu Dhabi, United Arab Emirates
Venue:
Findings
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
4735–4740
Language:
URL:
https://aclanthology.org/2022.findings-emnlp.348
DOI:
Bibkey:
Cite (ACL):
Everlyn Chimoto and Bruce Bassett. 2022. COMET-QE and Active Learning for Low-Resource Machine Translation. In Findings of the Association for Computational Linguistics: EMNLP 2022, pages 4735–4740, Abu Dhabi, United Arab Emirates. Association for Computational Linguistics.
Cite (Informal):
COMET-QE and Active Learning for Low-Resource Machine Translation (Chimoto & Bassett, Findings 2022)
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PDF:
https://preview.aclanthology.org/ingestion-script-update/2022.findings-emnlp.348.pdf