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arXiv physics/0602053physics.soc-ph
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社交网络动态中的合作与角色分化的出现

Cooperation and emergence of role differentiation in the dynamics of social networks

Victor M. Eguluz, Martin G. Zimmermann, Camilo J. Cela-Conde, Maxi San Miguel

摘要:

基于社交网络和个人选择行动和合作伙伴的能力的合作模型旨在描述人类的社会行为。对这些模型的大量计算机模拟为揭示新兴集体行为背后的社会机制提供了重要的见解。我们认为纠缠的共同进化的行动和社会结构的一个新版本的空间囚徒困境模型,自然让位于社会分化的过程。不同的社会角色从系统的动力学中产生:领导者--获得大量回报的个人,被相当一部分人口模仿--顺从者--不满意的合作代理人,继续合作--剥削者--回报大于合作者获得的平均回报的背叛者。动态生成一个可以具有小世界网络拓扑结构的社交网络。该网络具有强大的等级结构,其中领导者在维持高度合作的稳定政权中发挥着至关重要的作用。社会结构被证明是非常敏感的扰动作用于领导人。这种扰动产生了社会危机,被描述为通过网络传播的动态级联。

英文摘要:

Models of cooperation grounded on social networks and on the ability of individuals to choose actions and partners aim to describe human social behavior. Extensive computer simulations of these models give important insight in the social mechanisms behind emerging collective behavior. We consider the entangled co-evolution of actions and social structure in a new version of a spatial Prisoner's Dilemma model that naturally gives way to a process of social differentiation. Diverse social roles emerge from the dynamics of the system: leaders -individuals getting a large payoff who are imitated by a considerable fraction of the population-, conformists -unsatisfied cooperative agents that keep cooperating-, and exploiters -Defectors with a payoff larger than the average one obtained by Cooperators. The dynamics generates a social network that can have the topology of a small world network. The network has a strong hierarchical structure in which the leaders play an essential role sustaining a highly cooperative stable regime. The social structure is shown to be very sensitive to perturbations acting on the leaders. Such perturbations produce social crisis described as dynamical cascades that propagate through the network.

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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