arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1909.09540cs.LGstat.ML
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约束MDP的侦察规划算法

Reconnaissance and Planning algorithm for constrained MDP

Preferred Networks, Inc.(Preferred Networks公司);The University of Tokyo(东京大学)

Shin-ichi Maeda, Hayato Watahiki, Shintarou Okada, Masanori Koyama

摘要:

实际的强化学习问题通常被表述为约束马尔可夫决策过程(CMDP)问题,其中代理必须在满足一组指定的安全约束的情况下最大化期望收益。在这项研究中,我们提出了一种新的基于模拟器的方法来近似解决CMDP问题,而不会对安全约束做出任何妥协。我们通过将CMDP分解为一对MDP来实现这一点;侦察MDP和计划MDP。侦察MDP的目的是评估一组安全的行动,而规划MDP的目的是在使用侦察MDP授权的行动的同时使收益最大化。RMDP可以为任何给定的安全约束定义一组安全策略,这组安全策略可以用来解决另一个具有不同回报的CMDP问题。我们的方法不仅比以前的基于模拟器的CMDP方法在计算上要求更低,而且能够在高维环境中找到有竞争力的奖励寻求政策,包括涉及多个移动障碍物的环境。

英文摘要:

Practical reinforcement learning problems are often formulated as constrained Markov decision process (CMDP) problems, in which the agent has to maximize the expected return while satisfying a set of prescribed safety constraints. In this study, we propose a novel simulator-based method to approximately solve a CMDP problem without making any compromise on the safety constraints. We achieve this by decomposing the CMDP into a pair of MDPs; reconnaissance MDP and planning MDP. The purpose of reconnaissance MDP is to evaluate the set of actions that are safe, and the purpose of planning MDP is to maximize the return while using the actions authorized by reconnaissance MDP. RMDP can define a set of safe policies for any given set of safety constraint, and this set of safe policies can be used to solve another CMDP problem with different reward. Our method is not only computationally less demanding than the previous simulator-based approaches to CMDP, but also capable of finding a competitive reward-seeking policy in a high dimensional environment, including those involving multiple moving obstacles.

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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