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arXiv 1809.03093cs.GTcs.FL
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参数化博弈与参数化自动机

Parameterized Games and Parameterized Automata

Arno Pauly

摘要:

介绍了一种在有限自然数图上实现参数自动机和对策的方法。参数的访问基本上是通过允许从参数值倒计时到0,并根据是否达到0进行分支。主要的技术结果是,在游戏中,玩家可以赢得一些参数值,如果她能赢得一些指数范围以下的值。对于许多获胜条件,这意味着任何关于玩家能够通过任意量化参数值获胜的陈述的可判定性。虽然这一结果似乎具有广泛的适用性,但一个具体的动机来自对游戏中策略链的研究。最近,Bassett,Jecker,P.,拉斯金和范登布加德。从本文的主要结果出发,我们用更简单的证明得到了它们的可判定性结果的推广。作为主要结果证明中的核心技术概念,以及潜在的独立利益概念,我们将研究通过图形游戏形式定义的布尔函数。图游戏形式具有类似于单调回路的性质,尽管更简洁。我们提出了一些开放的问题,如何简洁,他们到底是,有一个味道类似于电路复杂性。这些问题的答案可以改善主要定理的界限。

英文摘要:

We introduce a way to parameterize automata and games on finite graphs with natural numbers. The parameters are accessed essentially by allowing counting down from the parameter value to 0 and branching depending on whether 0 has been reached. The main technical result is that in games, a player can win for some values of the parameters at all, if she can win for some values below an exponential bound. For many winning conditions, this implies decidability of any statements about a player being able to win with arbitrary quantification over the parameter values. While the result seems broadly applicable, a specific motivation comes from the study of chains of strategies in games. Chains of games were recently suggested as a means to define a rationality notion based on dominance that works well with quantitative games by Bassett, Jecker, P., Raskin and Van den Boogard. From the main result of this paper, we obtain generalizations of their decidability results with much simpler proofs. As both a core technical notion in the proof of the main result, and as a notion of potential independent interest, we look at boolean functions defined via graph game forms. Graph game forms have properties akin to monotone circuits, albeit are more concise. We raise some open questions regarding how concise they are exactly, which have a flavour similar to circuit complexity. Answers to these questions could improve the bounds in the main theorem.

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