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arXiv 1405.7724physics.soc-phcs.SI
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通过中心性测量中的相关性分析复杂网络

Analyzing complex networks through correlations in centrality measurements

José Ricardo Furlan Ronqui, Gonzalo Travieso

摘要:

许多现实世界的系统可以表示为相互连接的节点的复杂网络。能够量化网络中各个节点的相对重要性通常很重要,这是通过定义一些中心性度量来完成的任务,不同的中心性定义强调网络的不同方面。了解这些不同的中心性定义在多大程度上与不同的网络相关是很有趣的。在这项工作中,我们研究了不同的现实世界的网络和两个网络模型的一组中心性措施对之间的相关性。我们发现,中心性一般是相关的,但更强的相关性网络模型比真实的网络。我们还表明,每对中心的相关性的强度不同,从网络到网络。考虑到这一事实,我们建议使用的中心性相关配置文件,包括所有对感兴趣的中心之间的相关系数的值,作为一种方式来表征网络。使用酵母蛋白质相互作用网络作为一个例子,我们还表明,中心性相关配置文件可以用来评估一个网络模型作为一个给定的真实网络的代表的充分性。

英文摘要:

Many real world systems can be expressed as complex networks of interconnected nodes. It is frequently important to be able to quantify the relative importance of the various nodes in the network, a task accomplished by defining some centrality measures, with different centrality definitions stressing different aspects of the network. It is interesting to know to what extent these different centrality definitions are related for different networks. In this work, we study the correlation between pairs of a set of centrality measures for different real world networks and two network models. We show that the centralities are in general correlated, but with stronger correlations for network models than for real networks. We also show that the strength of the correlation of each pair of centralities varies from network to network. Taking this fact into account, we propose the use of a centrality correlation profile, consisting of the values of the correlation coefficients between all pairs of centralities of interest, as a way to characterize networks. Using the yeast protein interaction network as an example we show also that the centrality correlation profile can be used to assess the adequacy of a network model as a representation of a given real 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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