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arXiv 2408.11488cs.GT
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图上的联盟形成中的个体稳定动态

Individually Stable Dynamics in Coalition Formation over Graphs

Angelo Fanelli, Laurent Gourvès, Ayumi Igarashi, Luca Moscardelli

AI总结:

研究图上联盟形成博弈中个体稳定动态的收敛性,覆盖偏好层级并分析无环图拓扑,确定保证收敛的最一般条件。

摘要:

图上的联盟形成是一类被广泛研究的博弈,其参与者是顶点,可行的联盟必须是连通子图。在这种设定下,在各种稳定性概念下均衡的存在性和计算问题已引起广泛关注。然而,参与者从任何可行状态出发,经过一系列单方面改进偏差后努力达到均衡的自然过程,却较少被研究。我们研究动态向个体稳定结果收敛的问题,视角如下:保证收敛的最一般的偏好类和图拓扑是什么?为此,一方面,我们覆盖了一个偏好层级,从最一般的偏好到加性可分离偏好的一个子情形,包括个体理性和单调情形。另一方面,鉴于即使在最受限的偏好类中,在允许环的图上收敛也可能失败,我们分析了无环图拓扑,如树、路径和星。

英文摘要:

Coalition formation over graphs is a well studied class of games whose players are vertices and feasible coalitions must be connected subgraphs. In this setting, the existence and computation of equilibria, under various notions of stability, has attracted a lot of attention. However, the natural process by which players, starting from any feasible state, strive to reach an equilibrium after a series of unilateral improving deviations, has been less studied. We investigate the convergence of dynamics towards individually stable outcomes under the following perspective: what are the most general classes of preferences and graph topologies guaranteeing convergence? To this aim, on the one hand, we cover a hierarchy of preferences, ranging from the most general to a subcase of additively separable preferences, including individually rational and monotone cases. On the other hand, given that convergence may fail in graphs admitting a cycle even in our most restrictive preference class, we analyze acyclic graph topologies such as trees, paths, and stars.

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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