arXiv Machine Learning

When Is a Game a Markov Decision Process? Correspondences Between Game Theory and Reinforcement Learning

The paper establishes formal theorems linking game theory and reinforcement learning, showing that a game can be viewed as a Markov decision process in three distinct ways—definitional identity, exact reduction, or structural analogy. It systematically maps every standard game class and solution concept to corresponding reinforcement learning models, training procedures, and complexity results. The work also identifies where these correspondences break down, such as non‑stationarity, impossibility of uncoupled convergence to Nash equilibrium, and gaps between coarse correlated and correlated equilibria.

arXiv Machine Learning
Oct 5

Normal-Form Correlation in Markov Games

arXiv:2610.03621v1 Announce Type: cross Abstract: There has been a surge of recent work on correlated equilibrium concepts in Markov games. However, existing results focus on concepts weaker than nor...

By Ioannis Anagnostides, Constantinos Daskalakis, Gabriele Farina, Noah Golowich, Tuomas Sandholm, Brian Hu Zhang
arXiv Machine Learning
Aug 14

Decentralized Multi-Player Q-Learning in Episodic Markov Decision Processes with Information Asymmetry

arXiv:2608. 12753v1 Announce Type: new Abstract: We study decentralized multi-player reinforcement learning in episodic tabular Markov decision processes (MDPs) under three forms of information asymmetry: (A) unobserved actions with common rewards, (B) observed actions with independent rewards, and (C) unobserved actions with independent rewards.

By Larissa Xu, King Bi, William Chang
arXiv Machine Learning
5d ago

Statistical Foundations of Reinforcement Learning: A Non-Asymptotic Perspective

The monograph "Statistical Foundations of Reinforcement Learning: A Non-Asymptotic Perspective" surveys recent advances in finite-sample statistical theory for reinforcement learning. It focuses on tabular Markov decision processes and examines three sampling settings—generative model, online, and offline RL—alongside model-based and model-free algorithmic paradigms. The work emphasizes minimax-optimal sample complexity, provides self-contained analyses, and briefly explores extensions such as robust, multi-agent, federated, and human-feedback RL.

By Yuxin Chen, Yuejie Chi, Jianqing Fan, Gen Li, Yuting Wei, Yuling Yan
arXiv AI
Oct 31

Game-Theoretic Foundations for Undiscounted Bisimulation Metrics

The paper establishes a game-theoretic framework for bisimulation metrics in undiscounted reinforcement learning settings, including total- and average-reward problems. By interpreting metric operators as Bellman–Shapley operators of zero-sum turn-based games, it defines unique metrics even when the discount factor equals one. The authors also explore how metric finiteness relates to MDP structure, introduce a flexible action-space modification framework, and provide bounds linking these metrics to optimal value differences and aggregation-based planning guarantees.

By Matthew Zurek, Yudong Chen, Josiah P. Hanna