arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1202.2684cs.SIcond-mat.stat-mechphysics.soc-ph
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网络中的核心结构

Core-Periphery Structure in Networks

M. Puck Rombach, Mason A. Porter, James H. Fowler, Peter J. Mucha

摘要:

网络中的中间尺度(或“中尺度”)结构受到了相当大的关注,因为对这种结构的算法检测使得有可能发现在节点和边缘的局部尺度或在汇总统计的全球尺度上不明显的网络特征。许多类型的中尺度结构可以出现在网络中,但这些功能的调查主要集中在社区结构的识别和研究。在本文中,我们开发了一种新的方法来研究称为核心-外围结构的中尺度特征,这需要识别密集连接的核心节点和稀疏连接的外围节点。与社区相反,核心节点与外围节点的连接也相当良好。我们计算核心-外围结构的新方法可以识别网络中的多个核心,并考虑不同的可能核心。我们说明了我们的方法和几个现有的方法之间的差异,确定哪些节点属于核心,我们使用我们的技术来检查核心外围结构的例子中的友谊,协作,运输和投票网络。

英文摘要:

Intermediate-scale (or `meso-scale') structures in networks have received considerable attention, as the algorithmic detection of such structures makes it possible to discover network features that are not apparent either at the local scale of nodes and edges or at the global scale of summary statistics. Numerous types of meso-scale structures can occur in networks, but investigations of such features have focused predominantly on the identification and study of community structure. In this paper, we develop a new method to investigate the meso-scale feature known as core-periphery structure, which entails identifying densely-connected core nodes and sparsely-connected periphery nodes. In contrast to communities, the nodes in a core are also reasonably well-connected to those in the periphery. Our new method of computing core-periphery structure can identify multiple cores in a network and takes different possible cores into account. We illustrate the differences between our method and several existing methods for identifying which nodes belong to a core, and we use our technique to examine core-periphery structure in examples of friendship, collaboration, transportation, and voting networks.

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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