goodmen @ L-MT Shared Task: A Comparative Study of Neural Models for English-Hindi Legal Machine Translation

Deeraj S K, Karthik Suryanarayanan, Yash Ingle, Pruthwik Mishra


Abstract
In a massively multilingual country like India,providing legal judgments in understandablenative languages is essential for equitable jus-tice to all. The Legal Machine Translation(L-MT) shared task focuses on translating le-gal content from English to Hindi which is themost spoken language in India. We present acomprehensive evaluation of neural machinetranslation models for English-Hindi legal doc-ument translation, developed as part of the L-MT shared task. We investigate four multi-lingual and Indic focused translation systems.Our approach emphasizes domain specific fine-tuning on legal corpus while preserving statu-tory structure, legal citations, and jurisdic-tional terminology. We fine-tune two legalfocused translation models, InLegalTrans andIndicTrans2 on the English-Hindi legal paral-lel corpus provided by the organizers wherethe use of any external data is constrained.The fine-tuned InLegalTrans model achievesthe highest BLEU score of 0.48. Compara-tive analysis reveals that domain adaptationthrough fine-tuning on legal corpora signifi-cantly enhances translation quality for special-ized legal texts. Human evaluation confirmssuperior coherence and judicial tone preserva-tion in InLegalTrans outputs. Our best per-forming model is ranked 3rd on the test data.
Anthology ID:
2025.justnlp-main.13
Volume:
Proceedings of the 1st Workshop on NLP for Empowering Justice (JUST-NLP 2025)
Month:
December
Year:
2025
Address:
Mumbai, India
Editors:
Ashutosh Modi, Saptarshi Ghosh, Asif Ekbal, Pawan Goyal, Sarika Jain, Abhinav Joshi, Shivani Mishra, Debtanu Datta, Shounak Paul, Kshetrimayum Boynao Singh, Sandeep Kumar
Venues:
JUSTNLP | WS
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
127–132
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URL:
https://preview.aclanthology.org/ingest-ijcnlp-aacl/2025.justnlp-main.13/
DOI:
Bibkey:
Cite (ACL):
Deeraj S K, Karthik Suryanarayanan, Yash Ingle, and Pruthwik Mishra. 2025. goodmen @ L-MT Shared Task: A Comparative Study of Neural Models for English-Hindi Legal Machine Translation. In Proceedings of the 1st Workshop on NLP for Empowering Justice (JUST-NLP 2025), pages 127–132, Mumbai, India. Association for Computational Linguistics.
Cite (Informal):
goodmen @ L-MT Shared Task: A Comparative Study of Neural Models for English-Hindi Legal Machine Translation (K et al., JUSTNLP 2025)
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https://preview.aclanthology.org/ingest-ijcnlp-aacl/2025.justnlp-main.13.pdf