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arXiv 1602.06571cs.GT
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资源共享环境下竞争勘探的平均场均衡

Mean Field Equilibria for Competitive Exploration in Resource Sharing Settings

Pu Yang, Krishnamurthy Iyer, Peter Frazier

摘要:

我们认为游牧代理人的模型,探索和竞争时变的位置特定的资源,产生于众包运输服务,在线社区,并在传统的基于位置的经济活动。该模型包括一组代理和一组位置,每个位置都具有动态随机资源过程。每个代理获得由其位置处的总体资源水平以及那里的其他代理的数量确定的定期奖励。每个代理都是战略性的,可以在位置之间自由移动,并且每次都决定是留在同一个节点还是切换到另一个节点。我们研究的代理商的平衡行为作为一个功能的动态的随机资源过程和外部性的性质,每个代理商强加给别人在同一个位置。在渐近极限与代理和位置的数量成比例地增加,我们表明,存在一个平衡,并有一个阈值结构,每个代理决定切换到一个不同的位置,仅基于其当前位置的资源水平和其他代理在该位置的数量。这一结果提供了深入了解系统结构如何影响代理的集体能力,探索他们的域,找到并有效地利用资源丰富的地区。它还允许评估通过惩罚或补贴改变奖励结构的影响。

英文摘要:

We consider a model of nomadic agents exploring and competing for time-varying location-specific resources, arising in crowdsourced transportation services, online communities, and in traditional location based economic activity. This model comprises a group of agents, and a set of locations each endowed with a dynamic stochastic resource process. Each agent derives a periodic reward determined by the overall resource level at her location, and the number of other agents there. Each agent is strategic and free to move between locations, and at each time decides whether to stay at the same node or switch to another one. We study the equilibrium behavior of the agents as a function of dynamics of the stochastic resource process and the nature of the externality each agent imposes on others at the same location. In the asymptotic limit with the number of agents and locations increasing proportionally, we show that an equilibrium exists and has a threshold structure, where each agent decides to switch to a different location based only on their current location's resource level and the number of other agents at that location. This result provides insight into how system structure affects the agents' collective ability to explore their domain to find and effectively utilize resource-rich areas. It also allows assessing the impact of changing the reward structure through penalties or subsidies.

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