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arXiv 2005.03000cs.GTcs.SYeess.SY
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部分参与非原子路由博弈中的信息设计:计算与性质

Information Design in Non-atomic Routing Games with Partial Participation: Computation and Properties

Yixian Zhu, Ketan Savla

摘要:

我们考虑一个路由游戏之间的非原子代理的链接延迟功能的条件下的不确定状态的网络。代理具有相同的先验信念的状态,但只有一个固定的分数接收私有路由建议或一个共同的消息,这是由一个已知的随机化,被称为私人或公共信令策略分别产生。其余的智能体根据贝叶斯Nash流选择路径。我们开发了一种计算方法来解决最优信息设计问题,即,以最小化所有公共或服从的私有信令策略上的预期社交延迟。对于非参与代理引起的固定流,最优私有信令策略的设计被证明是多项式链路延迟函数的矩的广义问题,并承认原子的数量上的可证明的上限原子的解决方案。这意味着,对于多项式链路延迟函数,信息设计可以等效地转换为多项式优化问题。这反过来又可以是任意下界的一个已知的层次的半定松弛。该层次结构的第一级示出为精确的基本两个链路的情况下,仿射延迟函数。我们还确定了一类私人信令政策,最佳的社会成本是不增加的参与代理的比例增加并行网络。这是在现有的结果,在固定的信令策略下的参与代理的成本可能会随着他们的分数增加。

英文摘要:

We consider a routing game among non-atomic agents where link latency functions are conditional on an uncertain state of the network. The agents have the same prior belief about the state, but only a fixed fraction receive private route recommendations or a common message, which are generated by a known randomization, referred to as private or public signaling policy respectively. The remaining agents choose route according to Bayes Nash flow with respect to the prior. We develop a computational approach to solve the optimal information design problem, i.e., to minimize expected social latency over all public or obedient private signaling policies. For a fixed flow induced by non-participating agents, design of an optimal private signaling policy is shown to be a generalized problem of moments for polynomial link latency functions, and to admit an atomic solution with a provable upper bound on the number of atoms. This implies that, for polynomial link latency functions, information design can be equivalently cast as a polynomial optimization problem. This in turn can be arbitrarily lower bounded by a known hierarchy of semidefinite relaxations. The first level of this hierarchy is shown to be exact for the basic two link case with affine latency functions. We also identify a class of private signaling policies over which the optimal social cost is non-increasing with increasing fraction of participating agents for parallel networks. This is in contrast to existing results where the cost of participating agents under a fixed signaling policy may increase with their increasing fraction.

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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