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arXiv 2203.01740cs.GTcs.DM
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两局中人加权拥塞对策无政府状态的精确无政府代价

Exact Price of Anarchy for Weighted Congestion Games with Two Players

Joran van den Bosse, Marc Uetz, Matthias Walter

摘要:

本文给出了一个完整的分析,最坏情况下的均衡的各种版本的加权拥塞游戏有两个球员和仿射成本函数。结果是精确的无政府状态的无政府代价界限,它是两个玩家权重的参数,并准确地建立了游戏的原语如何进入均衡的质量。有趣的是,一些最坏的情况是当球员的体重只有轻微的差异。我们的研究结果还表明,在所有情况下,顺序游戏提高了无政府状态的无政府代价,然而,这种效果随着玩家权重差异的增加而消失。方法上,我们获得精确的无政府代价边界的对偶为基础的证明机制,基于一个紧凑的线性规划公式,计算最坏情况下的情况。这种机制产生基于对偶的最优性证书,最终可以变成纯代数证明。

英文摘要:

This paper gives a complete analysis of worst-case equilibria for various versions of weighted congestion games with two players and affine cost functions. The results are exact price of anarchy bounds which are parametric in the weights of the two players, and establish exactly how the primitives of the game enter into the quality of equilibria. Interestingly, some of the worst-cases are attained when the players' weights only differ slightly. Our findings also show that sequential play improves the price of anarchy in all cases, however, this effect vanishes with an increasing difference in the players' weights. Methodologically, we obtain exact price of anarchy bounds by a duality based proof mechanism, based on a compact linear programming formulation that computes worst-case instances. This mechanism yields duality-based optimality certificates which can eventually be turned into purely algebraic proofs.

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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