Last Updated: Apr. 12, 2026
Ph.D student, Member of
Prof. Isao Yamada's Laboratory
Department of Information and Communications Engineering
Institute of Science Tokyo
E-mail: matsuo [at] sp.ict.e.titech.ac.jp
Research Interests | 研究分野
- Control and Game Theory in Networks, Noncooperative Game Theory
- Optimization: Variational Inequalities, Fixed Point Theory, Monotone Operator Theory
Education | 学歴
- Apr. 2024-Sep. 2025: Dept. of Information and Communications Engineering, Institute of Science Tokyo (M.E., supervisor: Prof. Isao Yamada)
- Apr. 2020-Mar. 2024: Dept. of Information and Communications Engineering, Tokyo Institute of Technology (B.E., supervisor: Prof. Isao Yamada)
Award | 受賞
- Nov. 2025: IEICE 39th SIP Symposium, Young Researcher Encouragement Award
- Sep. 2025: Outstanding Master's Student Award (Institute of Science Tokyo, Dept. of Information and Communications Engineering)
- Sep. 2024: 2024 Tokyo Tech Award for Student Leadership
Grant | 助成金等
- Oct. 2025-: Grant for "Program for Development of Co-creative Experts towards Top-level AI Research (Science Tokyo BOOST)" from JST
- Apr. 2025: IEEE ICASSP 2025 Conference Travel Grant
Teaching Experience | 担当講義
- 2026-: Basics and Applications of Data Science and Artificial Intelligence I (teaching assistant)
- 2024-: Signal and System Analysis, Institute of Science Tokyo (teaching assistant)
Publications | 業績
Journal Paper (peer-reviewed)
- S. Matsuo, K. Kume, and I. Yamada, "Hierarchical variational inequality problem for noncooperative game-theoretic selection of generalized Nash equilibrium," Journal of Optimization Theory and Applications, vol. 208, no. 66, 2026. [official (OA), arXiv]
International Conference Paper (full paper, peer-reviewed)
- S. Matsuo, K. Kume, and I. Yamada, "Hierarchical Nash equilibrium over variational equilibria via fixed-point set expression of quasi-nonexpansive operator," in Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Hyderabad, India, April 2025 (poster presentation). [official, arXiv]
Invited Talk
- I. Yamada, S. Matsuo, K. Kume, "Hierarchical variational inequality problem and its algorithm for a noncooperative game theoretic equilibrium selection," 8th International Conference on Econometrics and Statistics (EcoSta 2025), Tokyo, Aug. 2025 (Invited by Prof. Eric Chi [Rice Univ.]).
Domestic Conference / Symposium (not peer-reviewed)
- 松尾 祥汰, 久米 啓太, 山田 功, "階層型変分不等式問題による非協力ゲーム理論的均衡選択と分散アルゴリズム," 日本応用数理学会第22回研究部会連合発表会, 東京, 2026年3月 (口頭発表).
- 松尾 祥汰, 久米 啓太, 山田 功, "A note on distributed noncooperative game-theoretic equilibrium selection," 電⼦情報通信学会第40回信号処理シンポジウム, 茨城, 2025年11月 (口頭発表).
- 松尾 祥汰, 久米 啓太, 山田 功, "Hierarchical variational inequality problem and algorithms for noncooperative game-theoretic equilibrium selection," ⽇本応⽤数理学会連続最適化および関連分野に関する夏季学校 2025，東京，2025年8⽉（ポスター発表）．
- 松尾 祥汰, 久米 啓太, 山田 功, "⾮協⼒ゲーム理論的な均衡点選択のための階層型変分不等式問題とアルゴリズム," ⽇本オペレーションズ・リサーチ学会研究部会「最適化の理論とアルゴリズム」未来を担う若⼿研究者の集い 2025, 茨城, 2025年5⽉ (⼝頭発表).
- 松尾 祥汰, 久米 啓太, 山田 功, "A fair equilibrium selection via hierarchical noncooperative game by the hybrid steepest descent method with quasi-nonexpansive operator," 電⼦情報通信学会第39回信号処理シンポジウム, 北海道, 2024年12⽉ (⼝頭発表/信号処理若⼿奨励賞受賞).
- 松尾 祥汰, 山田 功, "ある種の⼀般化Nash均衡集合上で定義された均衡問題に関する⼀考察," 日本応用数理学会第20回研究部会連合発表会, 新潟, 2024年3⽉ (⼝頭発表).