FormosanBench: Benchmarking Low-Resource Austronesian Languages in the Era of Large Language Models

• URL: http://arxiv.org/abs/2506.21563v1
• Date: Thu, 12 Jun 2025 07:02:28 GMT
• Title: FormosanBench: Benchmarking Low-Resource Austronesian Languages in the Era of Large Language Models
• Authors: Kaiying Kevin Lin, Hsiyu Chen, Haopeng Zhang,
• Abstract summary: We introduce FORMOSANBENCH, the first benchmark for evaluating large language models (LLMs) on low-resource Austronesian languages.<n>We assess model performance in zero-shot, 10-shot, and fine-tuned settings using FORMOSANBENCH.<n>Our results reveal a substantial performance gap between high-resource and Formosan languages.
• Score: 1.2403152094314245
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: While large language models (LLMs) have demonstrated impressive performance across a wide range of natural language processing (NLP) tasks in high-resource languages, their capabilities in low-resource and minority languages remain significantly underexplored. Formosan languages -- a subgroup of Austronesian languages spoken in Taiwan -- are both linguistically rich and endangered, largely due to the sociolinguistic dominance of Mandarin. In this work, we introduce FORMOSANBENCH, the first benchmark for evaluating LLMs on low-resource Austronesian languages. It covers three endangered Formosan languages: Atayal, Amis, and Paiwan, across three core NLP tasks: machine translation, automatic speech recognition (ASR), and text summarization. We assess model performance in zero-shot, 10-shot, and fine-tuned settings using FORMOSANBENCH. Our results reveal a substantial performance gap between high-resource and Formosan languages. Existing LLMs consistently underperform across all tasks, with 10-shot learning and fine-tuning offering only limited improvements. These findings underscore the urgent need for more inclusive NLP technologies that can effectively support endangered and underrepresented languages. We release our datasets and code to facilitate future research in this direction.

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