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arXiv 0802.1218physics.soc-phcond-mat.stat-mechphysics.comp-phstat.CO
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复杂网络的重叠层次社团结构检测

Detecting the overlapping and hierarchical community structure of complex networks

Andrea Lancichinetti, Santo Fortunato, Janos Kertesz

摘要:

自然界、社会和技术中的许多网络都以中观层次的组织为特征,节点组形成紧密连接的单元,称为社区或模块,彼此之间只有微弱的联系。揭示这种社区结构是复杂网络领域中最重要的问题之一。网络通常表现出层次结构,社区嵌入其他社区;此外,节点可以在不同社区之间共享。在这里,我们提出了第一个算法,发现重叠的社区和层次结构。该方法是基于适应度函数的局部优化。群落结构由适应度直方图中的峰值揭示。分辨率可以通过一个参数进行调整,从而能够调查组织的不同层次。在真实和人工网络上的测试给出了很好的结果。

英文摘要:

Many networks in nature, society and technology are characterized by a mesoscopic level of organization, with groups of nodes forming tightly connected units, called communities or modules, that are only weakly linked to each other. Uncovering this community structure is one of the most important problems in the field of complex networks. Networks often show a hierarchical organization, with communities embedded within other communities; moreover, nodes can be shared between different communities. Here we present the first algorithm that finds both overlapping communities and the hierarchical structure. The method is based on the local optimization of a fitness function. Community structure is revealed by peaks in the fitness histogram. The resolution can be tuned by a parameter enabling to investigate different hierarchical levels of organization. Tests on real and artificial networks give excellent results.

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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