Simultaneous Masking, Not Prompting Optimization: A Paradigm Shift in Fine-tuning LLMs for Simultaneous Translation

• URL: http://arxiv.org/abs/2405.10443v4
• Date: Wed, 09 Oct 2024 01:12:19 GMT
• Title: Simultaneous Masking, Not Prompting Optimization: A Paradigm Shift in Fine-tuning LLMs for Simultaneous Translation
• Authors: Matthew Raffel, Victor Agostinelli, Lizhong Chen,
• Abstract summary: Large language models (LLMs) have achieved state-of-the-art performance in various language processing tasks. We propose SimulMask, a new paradigm for fine-tuning LLMs for simultaneous translation. We have observed a significant translation quality improvement compared to state-of-the-art prompting optimization strategies on five language pairs.
• Score: 5.712277386555735
• License:
• Abstract: Large language models (LLMs) have achieved state-of-the-art performance in various language processing tasks, motivating their adoption in simultaneous translation. Current fine-tuning methods to adapt LLMs for simultaneous translation focus on prompting optimization strategies using either data augmentation or prompt structure modifications. However, these methods suffer from several issues, such as unnecessarily expanded training sets, computational inefficiency from dumping the key and value cache, increased prompt sizes, or restriction to a single decision policy. To eliminate these issues, in this work, we propose SimulMask, a new paradigm for fine-tuning LLMs for simultaneous translation. It utilizes a novel attention mask approach that models simultaneous translation during fine-tuning by masking attention for a desired decision policy. Applying the proposed SimulMask on a Falcon LLM for the IWSLT 2017 dataset, we have observed a significant translation quality improvement compared to state-of-the-art prompting optimization strategies on five language pairs while reducing the computational cost.

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