Adapting Multilingual LLMs to Low-Resource Languages using Continued Pre-training and Synthetic Corpus

• URL: http://arxiv.org/abs/2410.14815v1
• Date: Fri, 18 Oct 2024 18:35:19 GMT
• Title: Adapting Multilingual LLMs to Low-Resource Languages using Continued Pre-training and Synthetic Corpus
• Authors: Raviraj Joshi, Kanishk Singla, Anusha Kamath, Raunak Kalani, Rakesh Paul, Utkarsh Vaidya, Sanjay Singh Chauhan, Niranjan Wartikar, Eileen Long,
• Abstract summary: We introduce Nemotron-Mini-Hindi 4B, a bilingual SLM supporting both Hindi and English. We demonstrate that both the base and instruct models achieve state-of-the-art results on Hindi benchmarks.
• Score: 0.9674145073701153
• License:
• Abstract: Multilingual LLMs support a variety of languages; however, their performance is suboptimal for low-resource languages. In this work, we emphasize the importance of continued pre-training of multilingual LLMs and the use of translation-based synthetic pre-training corpora for improving LLMs in low-resource languages. We conduct our study in the context of the low-resource Indic language Hindi. We introduce Nemotron-Mini-Hindi 4B, a bilingual SLM supporting both Hindi and English, based on Nemotron-Mini 4B. The model is trained using a mix of real and synthetic Hindi + English tokens, with continuous pre-training performed on 400B tokens. We demonstrate that both the base and instruct models achieve state-of-the-art results on Hindi benchmarks while remaining competitive on English tasks. Additionally, we observe that the continued pre-training approach enhances the model's overall factual accuracy.

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