21181@AAAI

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#1 Equilibrium Finding in Normal-Form Games via Greedy Regret Minimization [PDF] [Copy] [Kimi]

Authors: Hugh Zhang ; Adam Lerer ; Noam Brown

We extend the classic regret minimization framework for approximating equilibria in normal-form games by greedily weighing iterates based on regrets observed at runtime. Theoretically, our method retains all previous convergence rate guarantees. Empirically, experiments on large randomly generated games and normal-form subgames of the AI benchmark Diplomacy show that greedy weights outperforms previous methods whenever sampling is used, sometimes by several orders of magnitude.