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arXiv 2602.05591math.OCcs.LG
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高效算法用于具有s-矩形模糊集的鲁棒马尔可夫决策过程

Efficient Algorithms for Robust Markov Decision Processes with $s$-Rectangular Ambiguity Sets

Department of Data Science, City University of Hong Kong(香港城市大学数据科学系);Department of Computer Science, University of New Hampshire(新罕布什尔大学计算机科学系);Imperial College Business School, Imperial College London(伦敦帝国理工学院商学院)

Chin Pang Ho, Marek Petrik, Wolfram Wiesemann

AI总结:

本文提出了一种高效算法,用于解决具有s-矩形模糊集的鲁棒马尔可夫决策过程,显著提升了求解速度。

摘要:

鲁棒马尔可夫决策过程(MDPs)因其能够保护MDPs免受样本外性能不佳的影响而受到广泛关注。与经典MDP不同,后者通过已知的转移核建模动态性,而鲁棒MDP则通过优化最不利的转移核来考虑不确定性,该转移核由历史数据构建的模糊集确定。本文我们开发了一个统一的解决方案框架,用于解决广泛类别的鲁棒MDP,其中每个状态的最不利转移概率被独立考虑。使用我们的算法,我们证明了具有1-范数、2-范数以及ϕ-分歧模糊集的s-矩形鲁棒MDP可以比最先进的商业求解器快几个数量级,并且通常仅比经典MDP慢一个对数因子。我们在合成生成以及标准基准实例上展示了我们算法的良好扩展特性。

英文摘要:

Robust Markov decision processes (MDPs) have attracted significant interest due to their ability to protect MDPs from poor out-of-sample performance in the presence of ambiguity. In contrast to classical MDPs, which account for stochasticity by modeling the dynamics through a stochastic process with a known transition kernel, a robust MDP additionally accounts for ambiguity by optimizing against the most adverse transition kernel from an ambiguity set constructed via historical data. In this paper, we develop a unified solution framework for a broad class of robust MDPs with $s$-rectangular ambiguity sets, where the most adverse transition probabilities are considered independently for each state. Using our algorithms, we show that $s$-rectangular robust MDPs with $1$- and $2$-norm as well as $ϕ$-divergence ambiguity sets can be solved several orders of magnitude faster than with state-of-the-art commercial solvers, and often only a logarithmic factor slower than classical MDPs. We demonstrate the favorable scaling properties of our algorithms on a range of synthetically generated as well as standard benchmark instances.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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