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arXiv 1407.4062cs.SIphysics.soc-ph
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无标度网络中的友谊悖论

The friendship paradox in scale-free networks

Marcos Amaku, Rafael I. Cipullo, José H. H. Grisi-Filho, Fernando S. Marques, Raul Ossada

摘要:

我们的朋友比我们有更多的朋友。这就是友谊悖论的基础。从数学上讲,朋友的朋友的平均数量比朋友的平均数量要多。在本研究中,我们分析了在<k><k_FF>度从最小度(k_min)到最大度(k_max)的无标度网络中,顶点(个体)的平均度与朋友的朋友的平均数量之间的关系。我们推导出一个表达式为<k_FF><k>无标度网络的幂律分布与给定的标度参数(α)。基于这个表达式,我们可以量化无标度网络的度分布如何影响朋友的朋友的平均数量。

英文摘要:

Our friends have more friends than we do. That is the basis of the friendship paradox. In mathematical terms, the mean number of friends of friends is higher than the mean number of friends. In the present study, we analyzed the relationship between the mean degree of vertices (individuals), <k>, and the mean number of friends of friends, <k_FF>, in scale-free networks with degrees ranging from a minimum degree (k_min) to a maximum degree (k_max). We deduced an expression for <k_FF> - <k> for scale-free networks following a power-law distribution with a given scaling parameter (alpha). Based on this expression, we can quantify how the degree distribution of a scale-free network affects the mean number of friends of friends.

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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