Can Large Language Models Robustly Perform Natural Language Inference for Japanese Comparatives?

Yosuke Mikami, Daiki Matsuoka, Hitomi Yanaka


Abstract
Large Language Models (LLMs) perform remarkably well in Natural Language Inference (NLI).However, NLI involving numerical and logical expressions remains challenging.Comparatives are a key linguistic phenomenon related to such inference, but the robustness of LLMs in handling them, especially in languages that are not dominant in the models’ training data, such as Japanese, has not been sufficiently explored.To address this gap, we construct a Japanese NLI dataset that focuses on comparatives and evaluate various LLMs in zero-shot and few-shot settings.Our results show that the performance of the models is sensitive to the prompt formats in the zero-shot setting and influenced by the gold labels in the few-shot examples.The LLMs also struggle to handle linguistic phenomena unique to Japanese.Furthermore, we observe that prompts containing logical semantic representations help the models predict the correct labels for inference problems that they struggle to solve even with few-shot examples.
Anthology ID:
2025.iwcs-1.13
Volume:
Proceedings of the 16th International Conference on Computational Semantics
Month:
September
Year:
2025
Address:
Düsseldorf, Germany
Editors:
Kilian Evang, Laura Kallmeyer, Sylvain Pogodalla
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IWCS | WS
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Publisher:
Association for Computational Linguistics
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Pages:
137–146
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URL:
https://preview.aclanthology.org/iwcs-25-ingestion/2025.iwcs-1.13/
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Cite (ACL):
Yosuke Mikami, Daiki Matsuoka, and Hitomi Yanaka. 2025. Can Large Language Models Robustly Perform Natural Language Inference for Japanese Comparatives?. In Proceedings of the 16th International Conference on Computational Semantics, pages 137–146, Düsseldorf, Germany. Association for Computational Linguistics.
Cite (Informal):
Can Large Language Models Robustly Perform Natural Language Inference for Japanese Comparatives? (Mikami et al., IWCS 2025)
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https://preview.aclanthology.org/iwcs-25-ingestion/2025.iwcs-1.13.pdf