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arXiv 1503.07439cs.SIphysics.soc-ph
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基于邻域膨胀种子扩展的重叠社区发现

Overlapping Community Detection Using Neighborhood-Inflated Seed Expansion

Joyce Jiyoung Whang, David F. Gleich, Inderjit S. Dhillon

摘要:

社区发现是网络分析中的一项重要任务。社区(也称为集群)是一组内聚顶点,其内部连接多于外部连接。在许多社会和信息网络中,这些社区自然重叠。例如,在社交网络中,图中的每个顶点对应于通常参与多个社区的个人。在本文中,我们提出了一个有效的重叠社区发现算法,使用种子扩展方法。我们的算法的核心思想是找到好的种子,然后根据社区度量对这些种子进行greenly扩展。在这种种子扩展方法中,我们研究了如何在图中确定好的种子节点的问题。特别是,我们开发了新的播种策略的个性化PageRank聚类方案,优化电导社区得分。实验结果表明,我们的种子扩展算法优于其他国家的最先进的重叠社区发现方法产生的凝聚力集群和识别地面真理社区。我们还表明,我们的新播种策略比现有的策略更好,因此在现实世界的网络中找到良好的重叠社区是有效的。

英文摘要:

Community detection is an important task in network analysis. A community (also referred to as a cluster) is a set of cohesive vertices that have more connections inside the set than outside. In many social and information networks, these communities naturally overlap. For instance, in a social network, each vertex in a graph corresponds to an individual who usually participates in multiple communities. In this paper, we propose an efficient overlapping community detection algorithm using a seed expansion approach. The key idea of our algorithm is to find good seeds, and then greedily expand these seeds based on a community metric. Within this seed expansion method, we investigate the problem of how to determine good seed nodes in a graph. In particular, we develop new seeding strategies for a personalized PageRank clustering scheme that optimizes the conductance community score. Experimental results show that our seed expansion algorithm outperforms other state-of-the-art overlapping community detection methods in terms of producing cohesive clusters and identifying ground-truth communities. We also show that our new seeding strategies are better than existing strategies, and are thus effective in finding good overlapping communities in real-world 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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