Exploring the Multilingual NLG Evaluation Abilities of LLM-Based Evaluators

• URL: http://arxiv.org/abs/2503.04360v1
• Date: Thu, 06 Mar 2025 12:04:29 GMT
• Title: Exploring the Multilingual NLG Evaluation Abilities of LLM-Based Evaluators
• Authors: Jiayi Chang, Mingqi Gao, Xinyu Hu, Xiaojun Wan,
• Abstract summary: This study provides a comprehensive analysis of the multilingual evaluation performance of 10 recent LLMs.<n>We found that excluding the reference answer from the prompt leads to better performance across various languages.<n>Most LLM-based evaluators show a higher correlation with human judgments in high-resource languages than in low-resource languages.
• Score: 38.681443695708786
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Previous research has shown that LLMs have potential in multilingual NLG evaluation tasks. However, existing research has not fully explored the differences in the evaluation capabilities of LLMs across different languages. To this end, this study provides a comprehensive analysis of the multilingual evaluation performance of 10 recent LLMs, spanning high-resource and low-resource languages through correlation analysis, perturbation attacks, and fine-tuning. We found that 1) excluding the reference answer from the prompt and using large-parameter LLM-based evaluators leads to better performance across various languages; 2) most LLM-based evaluators show a higher correlation with human judgments in high-resource languages than in low-resource languages; 3) in the languages where they are most sensitive to such attacks, they also tend to exhibit the highest correlation with human judgments; and 4) fine-tuning with data from a particular language yields a broadly consistent enhancement in the model's evaluation performance across diverse languages. Our findings highlight the imbalance in LLMs'evaluation capabilities across different languages and suggest that low-resource language scenarios deserve more attention.

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