REUSE: REference-free UnSupervised Quality Estimation Metric

Ananya Mukherjee, Manish Shrivastava


Abstract
This paper describes our submission to the WMT2022 shared metrics task. Our unsupervised metric estimates the translation quality at chunk-level and sentence-level. Source and target sentence chunks are retrieved by using a multi-lingual chunker. The chunk-level similarity is computed by leveraging BERT contextual word embeddings and sentence similarity scores are calculated by leveraging sentence embeddings of Language-Agnostic BERT models. The final quality estimation score is obtained by mean pooling the chunk-level and sentence-level similarity scores. This paper outlines our experiments and also reports the correlation with human judgements for en-de, en-ru and zh-en language pairs of WMT17, WMT18 and WMT19 test sets.
Anthology ID:
2022.wmt-1.50
Volume:
Proceedings of the Seventh Conference on Machine Translation (WMT)
Month:
December
Year:
2022
Address:
Abu Dhabi, United Arab Emirates (Hybrid)
Venue:
WMT
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
564–568
Language:
URL:
https://aclanthology.org/2022.wmt-1.50
DOI:
Bibkey:
Cite (ACL):
Ananya Mukherjee and Manish Shrivastava. 2022. REUSE: REference-free UnSupervised Quality Estimation Metric. In Proceedings of the Seventh Conference on Machine Translation (WMT), pages 564–568, Abu Dhabi, United Arab Emirates (Hybrid). Association for Computational Linguistics.
Cite (Informal):
REUSE: REference-free UnSupervised Quality Estimation Metric (Mukherjee & Shrivastava, WMT 2022)
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PDF:
https://preview.aclanthology.org/ingestion-script-update/2022.wmt-1.50.pdf