Unsupervised Embedding-based Metric for MT Evaluation with Improved Human Correlation

Ananya Mukherjee, Manish Shrivastava


Abstract
In this paper, we describe our submission to the WMT22 metrics shared task. Our metric focuses on computing contextual and syntactic equivalences along with lexical, morphological, and semantic similarity. The intent is to capture the fluency and context of the MT outputs along with their adequacy. Fluency is captured using syntactic similarity and context is captured using sentence similarity leveraging sentence embeddings. The final sentence translation score is the weighted combination of three similarity scores: a) Syntactic Similarity b) Lexical, Morphological and Semantic Similarity, and c) Contextual Similarity. This paper outlines two improved versions of MEE i.e., MEE2 and MEE4. Additionally, we report our experiments on language pairs of en-de, en-ru and zh-en from WMT17-19 testset and further depict the correlation with human assessments.
Anthology ID:
2022.wmt-1.49
Volume:
Proceedings of the Seventh Conference on Machine Translation (WMT)
Month:
December
Year:
2022
Address:
Abu Dhabi, United Arab Emirates (Hybrid)
Editors:
Philipp Koehn, Loïc Barrault, Ondřej Bojar, Fethi Bougares, Rajen Chatterjee, Marta R. Costa-jussà, Christian Federmann, Mark Fishel, Alexander Fraser, Markus Freitag, Yvette Graham, Roman Grundkiewicz, Paco Guzman, Barry Haddow, Matthias Huck, Antonio Jimeno Yepes, Tom Kocmi, André Martins, Makoto Morishita, Christof Monz, Masaaki Nagata, Toshiaki Nakazawa, Matteo Negri, Aurélie Névéol, Mariana Neves, Martin Popel, Marco Turchi, Marcos Zampieri
Venue:
WMT
SIG:
SIGMT
Publisher:
Association for Computational Linguistics
Note:
Pages:
558–563
Language:
URL:
https://aclanthology.org/2022.wmt-1.49
DOI:
Bibkey:
Cite (ACL):
Ananya Mukherjee and Manish Shrivastava. 2022. Unsupervised Embedding-based Metric for MT Evaluation with Improved Human Correlation. In Proceedings of the Seventh Conference on Machine Translation (WMT), pages 558–563, Abu Dhabi, United Arab Emirates (Hybrid). Association for Computational Linguistics.
Cite (Informal):
Unsupervised Embedding-based Metric for MT Evaluation with Improved Human Correlation (Mukherjee & Shrivastava, WMT 2022)
Copy Citation:
PDF:
https://aclanthology.org/2022.wmt-1.49.pdf