Search Results for author: Atsushi Iwasaki

Found 5 papers, 3 papers with code

Learning Fair Division from Bandit Feedback

no code implementations15 Nov 2023 Hakuei Yamada, Junpei Komiyama, Kenshi Abe, Atsushi Iwasaki

This work addresses learning online fair division under uncertainty, where a central planner sequentially allocates items without precise knowledge of agents' values or utilities.

Slingshot Perturbation to Learning in Monotone Games

no code implementations26 May 2023 Kenshi Abe, Kaito Ariu, Mitsuki Sakamoto, Atsushi Iwasaki

This paper addresses the problem of learning Nash equilibria in {\it monotone games} where the gradient of the payoff functions is monotone in the strategy profile space, potentially containing additive noise.

Last-Iterate Convergence with Full and Noisy Feedback in Two-Player Zero-Sum Games

1 code implementation21 Aug 2022 Kenshi Abe, Kaito Ariu, Mitsuki Sakamoto, Kentaro Toyoshima, Atsushi Iwasaki

This paper proposes Mutation-Driven Multiplicative Weights Update (M2WU) for learning an equilibrium in two-player zero-sum normal-form games and proves that it exhibits the last-iterate convergence property in both full and noisy feedback settings.

Multi-agent Reinforcement Learning

Mutation-Driven Follow the Regularized Leader for Last-Iterate Convergence in Zero-Sum Games

1 code implementation18 Jun 2022 Kenshi Abe, Mitsuki Sakamoto, Atsushi Iwasaki

In this study, we consider a variant of the Follow the Regularized Leader (FTRL) dynamics in two-player zero-sum games.

Anytime Capacity Expansion in Medical Residency Match by Monte Carlo Tree Search

1 code implementation14 Feb 2022 Kenshi Abe, Junpei Komiyama, Atsushi Iwasaki

Constructing a good search tree representation significantly boosts the performance of the proposed method.

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