DocHPLT: A Massively Multilingual Document-Level Translation Dataset

Fuente: arXiv
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Auteurs principaux: O'Brien, Dayyán, Malik, Bhavitvya, de Gibert, Ona, Chen, Pinzhen, Haddow, Barry, Tiedemann, Jörg
Format: Preprint
Publié: 2025
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author O'Brien, Dayyán
Malik, Bhavitvya
de Gibert, Ona
Chen, Pinzhen
Haddow, Barry
Tiedemann, Jörg
author_facet O'Brien, Dayyán
Malik, Bhavitvya
de Gibert, Ona
Chen, Pinzhen
Haddow, Barry
Tiedemann, Jörg
contents Existing document-level machine translation resources are only available for a handful of languages, mostly high-resourced ones. To facilitate the training and evaluation of document-level translation and, more broadly, long-context modeling for global communities, we create DocHPLT, the largest publicly available document-level translation dataset to date. It contains 124 million aligned document pairs across 50 languages paired with English, comprising 4.26 billion sentences. By adding pivoted alignments, practitioners can obtain 2500 additional pairs not involving English. Unlike previous reconstruction-based approaches that piece together documents from sentence-level data, we modify an existing web extraction pipeline to preserve complete document integrity from the source, retaining all content, including unaligned portions. After our preliminary experiments identify the optimal training context strategy for document-level translation, we demonstrate that LLMs fine-tuned on DocHPLT substantially outperform off-the-shelf instruction-tuned baselines, with particularly dramatic improvements for under-resourced languages. We open-source the dataset under a permissive license, providing essential infrastructure for advancing multilingual document-level translation.
format Preprint
id arxiv_https___arxiv_org_abs_2508_13079
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle DocHPLT: A Massively Multilingual Document-Level Translation Dataset
O'Brien, Dayyán
Malik, Bhavitvya
de Gibert, Ona
Chen, Pinzhen
Haddow, Barry
Tiedemann, Jörg
Computation and Language
Existing document-level machine translation resources are only available for a handful of languages, mostly high-resourced ones. To facilitate the training and evaluation of document-level translation and, more broadly, long-context modeling for global communities, we create DocHPLT, the largest publicly available document-level translation dataset to date. It contains 124 million aligned document pairs across 50 languages paired with English, comprising 4.26 billion sentences. By adding pivoted alignments, practitioners can obtain 2500 additional pairs not involving English. Unlike previous reconstruction-based approaches that piece together documents from sentence-level data, we modify an existing web extraction pipeline to preserve complete document integrity from the source, retaining all content, including unaligned portions. After our preliminary experiments identify the optimal training context strategy for document-level translation, we demonstrate that LLMs fine-tuned on DocHPLT substantially outperform off-the-shelf instruction-tuned baselines, with particularly dramatic improvements for under-resourced languages. We open-source the dataset under a permissive license, providing essential infrastructure for advancing multilingual document-level translation.
title DocHPLT: A Massively Multilingual Document-Level Translation Dataset
topic Computation and Language
url https://arxiv.org/abs/2508.13079