Price of Stability in Polynomial Congestion Games
Price of Stability in Polynomial Congestion Games
复制标题
多项式拥塞博弈中的稳定性代价
DOI:
10.1145/2841229
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发表时间:
2015
影响因子:
1.2
通讯作者:
Christodoulou G
中科院分区:
文献类型:
--
作者:
Christodoulou G
The price of anarchy (PoA) in congestion games has attracted a lot of research over the past decade. This has resulted in a thorough understanding of this concept. In contrast, the price of stability (PoS), which is an equally interesting concept, is much less understood.In this article, we consider congestion games with polynomial cost functions with nonnegative coefficients and maximum degreed. We give matching bounds for the PoS in such games—that is, our technique provides the exact value for any degreed.For linear congestion games, tight bounds were previously known. Those bounds hold even for the more restricted case of dominant equilibria, which may not exist. We give a separation result showing that this is not possible for congestion games with quadratic cost functions—in other words, the PoA for the subclass of games that admit a dominant strategy equilibrium is strictly smaller than the PoS for the general class.
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