Matsutani, Kohsei

2 publications

ICLR 2026 RL Squeezes, SFT Expands: A Comparative Study of Reasoning LLMs Kohsei Matsutani, Shota Takashiro, Gouki Minegishi, Takeshi Kojima, Yusuke Iwasawa, Yutaka Matsuo

ICML 2025 Mixture of Experts Provably Detect and Learn the Latent Cluster Structure in Gradient-Based Learning Ryotaro Kawata, Kohsei Matsutani, Yuri Kinoshita, Naoki Nishikawa, Taiji Suzuki