ARPO: Optimal Robust Policy Optimization Models from Intrinsic State-Adversarial Markov Decision Process
摘要
Reinforcement learning (RL) faces significant challenges when deployed in real-world scenarios with potential adversarial perturbations. The Intrinsic State-Adversarial Markov Decision Process (ISA-MDP) framework considers state perturbation to enhance policy robustness while preserving its natural performance. Building upon ISA-MDP, this paper proposes the first policy optimization framework and develops two distinct algorithms for different scenarios: Deterministic Adversarially Robust Policy Gradient (DARPG) and stochastic adversarially robust policy optimization, which effectively solve our formulated optimization problem. Furthermore, we provide a convergence analysis for both algorithms under specified theoretical assumptions.