Identifying Context-Dependent Translations for Evaluation Set Production

Rachel Wicks, Matt Post


Abstract
A major impediment to the transition to contextual machine translation is the absence of good evaluation metrics and test sets. Sentences that require context to be translated correctly are rare in test sets, reducing the utility of standard corpus-level metrics such as COMET or BLEU. On the other hand, datasets that annotate such sentences are also rare, small in scale, and available for only a few languages. To address this, we modernize, generalize, and extend previous annotation pipelines to produce MultiPro, a tool that identifies subsets of parallel documents containing sentences that require context to correctly translate five phenomena: gender, formality, and animacy for pronouns, verb phrase ellipsis, and ambiguous noun inflections. The input to the pipeline is a set of hand-crafted, per-language, linguistically-informed rules that select contextual sentence pairs using coreference, part-of-speech, and morphological features provided by state-of-the-art tools. We apply this pipeline to seven languages pairs (EN into and out-of DE, ES, FR, IT, PL, PT, and RU) and two datasets (OpenSubtitles and WMT test sets), and validate its performance using both overlap with previous work and its ability to discriminate a contextual MT system from a sentence-based one. We release the MultiPro pipeline and data as open source.
Anthology ID:
2023.wmt-1.42
Volume:
Proceedings of the Eighth Conference on Machine Translation
Month:
December
Year:
2023
Address:
Singapore
Editors:
Philipp Koehn, Barry Haddow, Tom Kocmi, Christof Monz
Venue:
WMT
SIG:
SIGMT
Publisher:
Association for Computational Linguistics
Note:
Pages:
452–467
Language:
URL:
https://aclanthology.org/2023.wmt-1.42
DOI:
10.18653/v1/2023.wmt-1.42
Bibkey:
Cite (ACL):
Rachel Wicks and Matt Post. 2023. Identifying Context-Dependent Translations for Evaluation Set Production. In Proceedings of the Eighth Conference on Machine Translation, pages 452–467, Singapore. Association for Computational Linguistics.
Cite (Informal):
Identifying Context-Dependent Translations for Evaluation Set Production (Wicks & Post, WMT 2023)
Copy Citation:
PDF:
https://aclanthology.org/2023.wmt-1.42.pdf