Low-Rank and Sparse Model Merging for Multi-Lingual Speech Recognition and Translation

• URL: http://arxiv.org/abs/2502.17380v2
• Date: Wed, 26 Feb 2025 02:45:56 GMT
• Title: Low-Rank and Sparse Model Merging for Multi-Lingual Speech Recognition and Translation
• Authors: Qiuming Zhao, Guangzhi Sun, Chao Zhang, Mingxing Xu, Thomas Fang Zheng,
• Abstract summary: We introduce LoRS-Merging, a technique designed to efficiently integrate models trained on different languages or tasks.<n>LoRS-Merging reduces the word error rate by 10% and improves BLEU scores by 4% compared to conventional multi-lingual multi-task training baselines.
• Score: 12.090488308404765
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Language diversity presents a significant challenge in speech-to-text (S2T) tasks, such as automatic speech recognition and translation. Traditional multi-task training approaches aim to address this by jointly optimizing multiple speech recognition and translation tasks across various languages. While models like Whisper, built on these strategies, demonstrate strong performance, they still face issues of high computational cost, language interference, suboptimal training configurations, and limited extensibility. To overcome these challenges, we introduce LoRS-Merging (low-rank and sparse model merging), a novel technique designed to efficiently integrate models trained on different languages or tasks while preserving performance and reducing computational overhead. LoRS-Merging combines low-rank and sparse pruning to retain essential structures while eliminating redundant parameters, mitigating language and task interference, and enhancing extensibility. Experimental results across a range of languages demonstrate that LoRS-Merging reduces the word error rate by 10% and improves BLEU scores by 4% compared to conventional multi-lingual multi-task training baselines. Our findings suggest that model merging, particularly LoRS-Merging, is a scalable and effective complement to traditional multi-lingual training strategies for S2T applications.

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