collaborators

5 papers

cs.AI2026

Are Large Reasoning Models Good Everyday Reasoners? A Comparison with Non-Reasoning Models on Logical Reasoning Tasks

Kentaro Ozeki, Risako Ando, Takanobu Morishita +3

Large reasoning models (LRMs) that leverage test-time computation achieve strong performance on mathematical and scientific benchmarks and are increasingly deployed in real-world a…

cs.CL2026

Do Diagrams Help Large Language Models Reason? Evidence from Syllogistic Reasoning

Risako Ando, Koji Mineshima

Diagrams are widely used to support logical reasoning, and prior studies suggest that representations such as Euler diagrams can improve human reasoning performance. Recent work ha…

cs.CL2026

Abductive Reasoning with Syllogistic Forms in Large Language Models

Hirohiko Abe, Risako Ando, Takanobu Morishita Kentaro Ozeki +2

Research in AI using Large-Language Models (LLMs) is rapidly evolving, and the comparison of their performance with human reasoning has become a key concern. Prior studies have ind…

cs.CL2026

Evaluation of Deontic Conditional Reasoning in Large Language Models: The Case of Wason's Selection Task

Hirohiko Abe, Kentaro Ozeki, Risako Ando +3

As large language models (LLMs) advance in linguistic competence, their reasoning abilities are gaining increasing attention. In humans, reasoning often performs well in domain spe…

cs.AI2025

Normative Reasoning in Large Language Models: A Comparative Benchmark from Logical and Modal Perspectives

Kentaro Ozeki, Risako Ando, Takanobu Morishita +3

Normative reasoning is a type of reasoning that involves normative or deontic modality, such as obligation and permission. While large language models (LLMs) have demonstrated rema…