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arXiv 1506.04047cs.GTcs.DMcs.MAmath.COmath.OC
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二偏好能力限制自私复制博弈的近似算法及其无政府代价的紧界

Approximation Algorithm for the Binary-Preference Capacitated Selfish Replication Game and a Tight Bound on its Price of Anarchy

Seyed Rasoul Etesami, Tamer Basar

摘要:

我们考虑一般无向网络上具有二进制偏好的能力限制自私复制(CSR)博弈。我们首先表明,这样的游戏有一个相关的普通的潜在功能,因此总是承认一个纯策略纳什均衡(NE)。进一步地,当网络的最小度与资源数量相同量级时,存在精确的多项式时间算法可以找到网元。在此之后,我们研究了这种博弈的无政府无政府代价,并证明了它的上界为3,我们进一步提供了一些例子,无政府的无政府代价至少是2。我们开发了一个准多项式算法O(n^2D^{ln n}),其中n是参与者的数量,D是网络的直径,它可以以分布式的方式找到一个最优分配的常数因子内的分配配置文件,从而找到游戏的任何纯策略NE。证明这一结果使用了一个新的潜在的功能。

英文摘要:

We consider the capacitated selfish replication (CSR) game with binary preferences, over general undirected networks. We first show that such games have an associated ordinary potential function, and hence always admit a pure-strategy Nash equilibrium (NE). Further, when the minimum degree of the network and the number of resources are of the same order, there exists an exact polynomial time algorithm which can find a NE. Following this, we study the price of anarchy of such games, and show that it is bounded above by 3; we further provide some instances for which the price of anarchy is at least 2. We develop a quasi-polynomial algorithm O(n^2D^{ln n}), where n is the number of players and D is the diameter of the network, which can find, in a distributed manner, an allocation profile that is within a constant factor of the optimal allocation, and hence of any pure-strategy NE of the game. Proof of this result uses a novel potential function.

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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