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arXiv 1104.2909cs.GT
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能量和平均支付奇偶马氏决策过程

Energy and Mean-Payoff Parity Markov Decision Processes

Krishnendu Chatterjee, Laurent Doyen

摘要:

我们考虑马尔可夫决策过程(MDP)的平均支付平价和能源平价的目标。在系统设计中,奇偶性目标用于编码ω-正则规范,而平均支付和能量目标可用于建模定量资源约束。能量条件要求资源水平永远不会下降到0以下,而平均回报条件要求资源消耗的极限平均值在阈值内。虽然这两个(能量和平均收益)经典条件是等价的两个玩家的游戏,我们表明,他们不同的MDPs。我们表明,决定一个州是否几乎肯定获胜的问题(即,在能量奇偶校验MDP中以概率1)获胜是在NP \cap coNP中,而对于平均支付奇偶校验MDP,该问题可在多项式时间中求解,从而改进了最近的PSPACE界。

英文摘要:

We consider Markov Decision Processes (MDPs) with mean-payoff parity and energy parity objectives. In system design, the parity objective is used to encode ω-regular specifications, and the mean-payoff and energy objectives can be used to model quantitative resource constraints. The energy condition requires that the resource level never drops below 0, and the mean-payoff condition requires that the limit-average value of the resource consumption is within a threshold. While these two (energy and mean-payoff) classical conditions are equivalent for two-player games, we show that they differ for MDPs. We show that the problem of deciding whether a state is almost-sure winning (i.e., winning with probability 1) in energy parity MDPs is in NP \cap coNP, while for mean-payoff parity MDPs, the problem is solvable in polynomial time, improving a recent PSPACE bound.

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