arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1005.4376physics.soc-phcs.IR
收藏

描述复杂网络的社团结构

Characterizing the community structure of complex networks

Andrea Lancichinetti, Mikko Kivela, Jari Saramaki, Santo Fortunato

摘要:

社团结构是复杂网络的重要性质之一,对网络的拓扑结构和功能起着至关重要的作用。虽然在社区检测问题上已经做了大量的工作,但到目前为止,很少有人关注真实网络中的社区调查。我们提出了一个系统的经验分析的统计特性的社区在大型信息,通信,技术,生物和社交网络。我们发现,相同类别的网络的介观组织是非常相似的。这反映在社区结构的几个特征中,这些特征可用作特定网络类别的“指纹”。虽然社区规模分布总是很广,但某些类别的网络主要由树状社区组成,而其他类别的网络则具有更密集的模块。社区内的平均路径长度最初随社区规模的增长而增长,但当社区大于特征规模时,增长饱和或放缓。这种行为与社区内存在的枢纽有关,其作用因类别而异。此外,节点的社区嵌入性(以其社区内链接的比例来衡量)对于每个类别都有一个特征分布。我们的研究结果是通过使用两种根本不同的社区检测方法进行验证的。

英文摘要:

Community structure is one of the key properties of complex networks and plays a crucial role in their topology and function. While an impressive amount of work has been done on the issue of community detection, very little attention has been so far devoted to the investigation of communities in real networks. We present a systematic empirical analysis of the statistical properties of communities in large information, communication, technological, biological, and social networks. We find that the mesoscopic organization of networks of the same category is remarkably similar. This is reflected in several characteristics of community structure, which can be used as ``fingerprints'' of specific network categories. While community size distributions are always broad, certain categories of networks consist mainly of tree-like communities, while others have denser modules. Average path lengths within communities initially grow logarithmically with community size, but the growth saturates or slows down for communities larger than a characteristic size. This behaviour is related to the presence of hubs within communities, whose roles differ across categories. Also the community embeddedness of nodes, measured in terms of the fraction of links within their communities, has a characteristic distribution for each category. Our findings are verified by the use of two fundamentally different community detection methods.

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。

↑