Cross-lingual Human-Preference Alignment for Neural Machine Translation with Direct Quality Optimization

Fuente: arXiv
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Auteurs principaux: Uhlig, Kaden, Wuebker, Joern, Reinauer, Raphael, DeNero, John
Format: Preprint
Publié: 2024
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author Uhlig, Kaden
Wuebker, Joern
Reinauer, Raphael
DeNero, John
author_facet Uhlig, Kaden
Wuebker, Joern
Reinauer, Raphael
DeNero, John
contents Reinforcement Learning from Human Feedback (RLHF) and derivative techniques like Direct Preference Optimization (DPO) are task-alignment algorithms used to repurpose general, foundational models for specific tasks. We show that applying task-alignment to neural machine translation (NMT) addresses an existing task--data mismatch in NMT, leading to improvements across all languages of a multilingual model, even when task-alignment is only applied to a subset of those languages. We do so by introducing Direct Quality Optimization (DQO), a variant of DPO leveraging a pre-trained translation quality estimation model as a proxy for human preferences, and verify the improvements with both automatic metrics and human evaluation.
format Preprint
id arxiv_https___arxiv_org_abs_2409_17673
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Cross-lingual Human-Preference Alignment for Neural Machine Translation with Direct Quality Optimization
Uhlig, Kaden
Wuebker, Joern
Reinauer, Raphael
DeNero, John
Computation and Language
I.2.7
Reinforcement Learning from Human Feedback (RLHF) and derivative techniques like Direct Preference Optimization (DPO) are task-alignment algorithms used to repurpose general, foundational models for specific tasks. We show that applying task-alignment to neural machine translation (NMT) addresses an existing task--data mismatch in NMT, leading to improvements across all languages of a multilingual model, even when task-alignment is only applied to a subset of those languages. We do so by introducing Direct Quality Optimization (DQO), a variant of DPO leveraging a pre-trained translation quality estimation model as a proxy for human preferences, and verify the improvements with both automatic metrics and human evaluation.
title Cross-lingual Human-Preference Alignment for Neural Machine Translation with Direct Quality Optimization
topic Computation and Language
I.2.7
url https://arxiv.org/abs/2409.17673