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arXiv 1003.0118cs.GT
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随机BPA对策的定性可达性

Qualitative Reachability in Stochastic BPA Games

Tomáš Brázdil, Václav Brožek, Antonín Kučera, Jan Obdržálek

摘要:

我们考虑一类由无状态下推自动机(或等价地,1-出口递归状态机)生成的无限状态随机博弈,其中获胜目标由一组规则的目标配置和定性概率约束“>0”或“= 1”指定。一个参与者的目标是最大化到达目标集的概率,从而满足约束,而另一个参与者的目标则相反。我们表明,在这样的游戏中的赢家可以确定在PTIME的“>0”的约束,在NP和coNP的“=1”的约束。此外,我们证明了两个球员的获胜区域是经常的,我们设计的算法计算相关的有限状态自动机。最后,我们证明了获胜策略可以有效地合成。

英文摘要:

We consider a class of infinite-state stochastic games generated by stateless pushdown automata (or, equivalently, 1-exit recursive state machines), where the winning objective is specified by a regular set of target configurations and a qualitative probability constraint `>0' or `=1'. The goal of one player is to maximize the probability of reaching the target set so that the constraint is satisfied, while the other player aims at the opposite. We show that the winner in such games can be determined in PTIME for the `>0' constraint, and both in NP and coNP for the `=1' constraint. Further, we prove that the winning regions for both players are regular, and we design algorithms which compute the associated finite-state automata. Finally, we show that winning strategies can be synthesized effectively.

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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