English | Japanese
I am an Assistant Professor in the Department of Mathematical Informatics at the University of Tokyo. I also hold a cross-appointment as a Specially Appointed Assistant Professor in the Graduate School of Engineering Science at the University of Osaka, supported by JST BOOST. In addition, I am a Visiting Scientist in the Sequential Decision Making Team at the RIKEN Center for Advanced Intelligence Project. My research interests include a wide range of topics in theoretical machine learning, especially online learning and its applications to game theory, nonconvex optimization, bandits, and reinforcement learning.
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Contact: tsuchiya [at] mist.i.u-tokyo.ac.jp
New! Slides for the IBIS 2026 tutorial "Introduction to Online Convex Optimization and Its Applications to Game Theory" (in Japanese) [slides (speaker deck)]
New! Slides (tentative) for our recent paper "Muon with Finite Newton–Schulz: The Smoothing Benefit in Nonsmooth Nonconvex Optimization" [slides (English)] [slides (Japanese)]
Slides for the ELLIS Milan + RIKEN AIP Joint ELIAS Workshop [slides]
(α-β) indicates that the authors are listed in alphabetical order.