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arXiv 0901.1923physics.soc-ph
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随机无标度图中囚徒困境博弈的合作

Cooperation in the Prisoner's Dilemma game in Random Scale-Free Graphs

J. Poncela, J. Gomez-Gardenes, Y. Moreno, L. M. Floria

摘要:

本文研究了无标度网络中参与囚徒困境博弈的智能体的合作行为。我们发现,生存的合作是增强随机齐次图,但另一方面,减少相比,发现在巴拉巴西-阿尔伯特无标度网络。我们发现,后者的减少与合作的结构。此外,我们提出了一个平均场近似研究网络中的进化动力学没有度的度相关性和任意度分布。平均场方法类似于用于描述疾病在复杂网络中传播的方法,进一步将策略划分为度类。我们表明,这种近似是适合于描述一组特定的初始条件下,如合作者在较高程度的类的位置的系统的行为,而它未能再现在任意初始配置的数值模拟中观察到的合作水平。

英文摘要:

In this paper we study the cooperative behavior of agents playing the Prisoner's Dilemma game in random scale-free networks. We show that the survival of cooperation is enhanced with respect to random homogeneous graphs but, on the other hand, decreases when compared to that found in Barabási-Albert scale-free networks. We show that the latter decrease is related with the structure of cooperation. Additionally, we present a mean field approximation for studying evolutionary dynamics in networks with no degree-degree correlations and with arbitrary degree distribution. The mean field approach is similar to the one used for describing the disease spreading in complex networks, making a further compartmentalization of the strategists partition into degree-classes. We show that this kind of approximation is suitable to describe the behavior of the system for a particular set of initial conditions, such as the placement of cooperators in the higher-degree classes, while it fails to reproduce the level of cooperation observed in the numerical simulations for arbitrary initial configurations.

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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