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20242026
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cs.GT2026

Equilibrium with Internal Transfers

Mingyang Liu, Gabriele Farina, Asuman Ozdaglar

Nash equilibrium (NE) arises from selfish utility maximization, yet its social welfare can be arbitrarily far from optimal. Moreover, computing an NE is intractable in general. We…

cs.GT2026

Computing Equilibrium beyond Unilateral Deviation

Mingyang Liu, Gabriele Farina, Asuman Ozdaglar

Most familiar equilibrium concepts, such as Nash and correlated equilibrium, guarantee only that no single player can improve their utility by deviating unilaterally. They offer no…

cs.GT2026

Differentially Private Equilibrium Finding in Polymatrix Games

Mingyang Liu, Gabriele Farina, Asuman Ozdaglar

We study equilibrium finding in polymatrix games under differential privacy constraints. Prior work in this area fails to achieve both high-accuracy equilibria and a low privacy bu…

cs.GT2025

Multi-Player Zero-Sum Markov Games with Networked Separable Interactions

Chanwoo Park, Kaiqing Zhang, Asuman Ozdaglar

We study a new class of Markov games, \emph(multi-player) zero-sum Markov Games} with \emph{Networked separable interactions} (zero-sum NMGs), to model the local interaction struct…

cs.GT2025

A Policy-Gradient Approach to Solving Imperfect-Information Games with Best-Iterate Convergence

Mingyang Liu, Gabriele Farina, Asuman Ozdaglar

Policy gradient methods have become a staple of any single-agent reinforcement learning toolbox, due to their combination of desirable properties: iterate convergence, efficient us…

cs.GT2025

The Power of Regularization in Solving Extensive-Form Games

Mingyang Liu, Asuman Ozdaglar, Tiancheng Yu +1

In this paper, we investigate the power of {\it regularization}, a common technique in reinforcement learning and optimization, in solving extensive-form games (EFGs). We propose a…