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arXiv 1705.01784cs.GT
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动态交通网络博弈

A Network Game of Dynamic Traffic

Zhigang Cao, Bo Chen, Xujin Chen, Changjun Wang

摘要:

本文研究了具有单起点-终点对的原子代理的离散时间动态流量的网络拥塞博弈。任何代理在每个顶点自由地做出动态决策(例如,道路交叉口)并且利用边缘上的给定优先级来调节交通(例如,路段)。我们首先构造性地证明了这个博弈中总是存在一个子博弈完美均衡(SPE)。然后,我们研究了这个模型和一个简化模型之间的关系,在该模型中,代理同时选择和固定的起点-目的地路径。我们证明了简化模型的纳什均衡(NE)流集是主模型的SPE流集的一个真子集。我们证明,每个NE也是一个强NE,因此弱帕累托最优。我们建立了NE流的其他几个很好的性质,包括全球先进先出。然后对两类网络,包括串并联网络,证明了在任意给定的情况下,均衡队长是有界的,这意味着任意给定博弈情况下的无政府状态无政府代价是有界的,只要流入量不超过网络容量.

英文摘要:

We study a network congestion game of discrete-time dynamic traffic of atomic agents with a single origin-destination pair. Any agent freely makes a dynamic decision at each vertex (e.g., road crossing) and traffic is regulated with given priorities on edges (e.g., road segments). We first constructively prove that there always exists a subgame perfect equilibrium (SPE) in this game. We then study the relationship between this model and a simplified model, in which agents select and fix an origin-destination path simultaneously. We show that the set of Nash equilibrium (NE) flows of the simplified model is a proper subset of the set of SPE flows of our main model. We prove that each NE is also a strong NE and hence weakly Pareto optimal. We establish several other nice properties of NE flows, including global First-In-First-Out. Then for two classes of networks, including series-parallel ones, we show that the queue lengths at equilibrium are bounded at any given instance, which means the price of anarchy of any given game instance is bounded, provided that the inflow size never exceeds the network capacity.

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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