arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0907.3708physics.soc-phcond-mat.stat-mechstat.AP
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网络中社区的统计意义

Statistical significance of communities in networks

Andrea Lancichinetti, Filippo Radicchi, Jose J. Ramasco

摘要:

现实网络中的节点通常组织在本地模块中。这些组被称为社区,直观地定义为内部连接密度大于外部链接密度的子图。在这项工作中,我们引入了一个新的措施,旨在量化的统计意义的单一社区。极值统计量和顺序统计量用于预测与随机图中的单个聚类相关的统计量。这些分布允许我们将一个社区重要性定义为通用聚类算法在随机图中找到这样一个组的概率。该方法被成功地应用于现实世界的网络的情况下,其社区的意义的评估。

英文摘要:

Nodes in real-world networks are usually organized in local modules. These groups, called communities, are intuitively defined as sub-graphs with a larger density of internal connections than of external links. In this work, we introduce a new measure aimed at quantifying the statistical significance of single communities. Extreme and Order Statistics are used to predict the statistics associated with individual clusters in random graphs. These distributions allows us to define one community significance as the probability that a generic clustering algorithm finds such a group in a random graph. The method is successfully applied in the case of real-world networks for the evaluation of the significance of their communities.

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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