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arXiv 2007.01525math.OCcs.GT
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时变网络的动态平衡

Dynamic Equilibria in Time-Varying Networks

Hoang Minh Pham, Leon Sering

摘要:

通过考虑纳什均衡来预测公共环境中的自私行为是对策论的核心概念。对于动态交通分配问题的模型流随时间的游戏,其中每个粒子试图尽快到达其目的地,动态平衡被称为纳什流随时间。到目前为止,这个模型只考虑了网络中的每个弧都配备了一个恒定的容量,限制流出率,并与渡越时间,确定一个粒子穿越弧所需的时间。然而,现实世界的交通网络可能会受到时间变化的影响,例如,在某个时间段内由建筑工程或特殊速度区引起的变化。为了对这些交通场景进行适当的建模,我们通过时间依赖的容量和时间依赖的通行时间扩展了时间流模型。我们的第一个主要结果是表征的纳什流的结构随时间的推移。类似于静态网络模型,动态平衡中的粒子的策略可以用特定的静态流来表征,称为具有重置的细流。第二个主要的结果是存在的纳什流随着时间的推移,我们显示在一个建设性的方式,通过扩展流随着时间的推移一步一步地由这些薄流。

英文摘要:

Predicting selfish behavior in public environments by considering Nash equilibria is a central concept of game theory. For the dynamic traffic assignment problem modeled by a flow over time game, in which every particle tries to reach its destination as fast as possible, the dynamic equilibria are called Nash flows over time. So far, this model has only been considered for networks in which each arc is equipped with a constant capacity, limiting the outflow rate, and with a transit time, determining the time it takes for a particle to traverse the arc. However, real-world traffic networks can be affected by temporal changes, for example, caused by construction works or special speed zones during some time period. To model these traffic scenarios appropriately, we extend the flow over time model by time-dependent capacities and time-dependent transit times. Our first main result is the characterization of the structure of Nash flows over time. Similar to the static-network model, the strategies of the particles in dynamic equilibria can be characterized by specific static flows, called thin flows with resetting. The second main result is the existence of Nash flows over time, which we show in a constructive manner by extending a flow over time step by step by these thin flows.

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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