arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1006.0673cs.GTcs.LO
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随机免费

Randomness for Free

Krishnendu Chatterjee, Laurent Doyen, Hugo Gimbert, Thomas A. Henzinger

摘要:

我们考虑图上的两人零和博弈。这些游戏可以根据玩家的信息和他们之间的互动模式进行分类。根据信息的分类如下:(a)部分观察(两个玩家都对游戏有部分看法);(b)单侧完全观察(一个玩家有完全观察);和(c)完全观察(两个玩家都对游戏有完全看法)。根据互动模式,我们有以下分类:(a)并发(两个玩家同时互动);和(b)回合制(两个玩家轮流互动)。这些博弈中的两个随机性来源是转移函数的随机性和策略的随机性。一般来说,随机策略比确定性策略更强大,并且过渡中的随机性给出了更一般的游戏类别。在这项工作中,我们提出了一个完整的表征类游戏的随机性是没有帮助的:(a)过渡函数概率过渡可以模拟确定性过渡);和(b)战略(纯战略一样强大的随机化战略)。由于我们的特性,我们得到新的不可判定性结果,这些游戏。

英文摘要:

We consider two-player zero-sum games on graphs. These games can be classified on the basis of the information of the players and on the mode of interaction between them. On the basis of information the classification is as follows: (a) partial-observation (both players have partial view of the game); (b) one-sided complete-observation (one player has complete observation); and (c) complete-observation (both players have complete view of the game). On the basis of mode of interaction we have the following classification: (a) concurrent (both players interact simultaneously); and (b) turn-based (both players interact in turn). The two sources of randomness in these games are randomness in transition function and randomness in strategies. In general, randomized strategies are more powerful than deterministic strategies, and randomness in transitions gives more general classes of games. In this work we present a complete characterization for the classes of games where randomness is not helpful in: (a) the transition function probabilistic transition can be simulated by deterministic transition); and (b) strategies (pure strategies are as powerful as randomized strategies). As consequence of our characterization we obtain new undecidability results for these games.

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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