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arXiv 0705.4445physics.soc-ph
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社区检测中的质量函数

Quality functions in community detection

Santo Fortunato

摘要:

社区结构是复杂网络的局部组织结构,是提取节点间功能关系的最重要特征。在过去的几年中,社区检测的问题已经重新制定了一个函数,纽曼-格文模块化,这是应该表达的网络划分到社区的质量方面的优化。从最近的关键调查模块化优化,指出存在的分辨率限制,严重限制其适用性,我们讨论了社区检测中使用的质量函数的一般问题。我们的主要结论是,质量函数是有用的,以比较分区与相同数量的模块,而分区与不同数量的模块的比较是不直接的,可能会导致歧义。

英文摘要:

Community structure represents the local organization of complex networks and the single most important feature to extract functional relationships between nodes. In the last years, the problem of community detection has been reformulated in terms of the optimization of a function, the Newman-Girvan modularity, that is supposed to express the quality of the partitions of a network into communities. Starting from a recent critical survey on modularity optimization, pointing out the existence of a resolution limit that poses severe limits to its applicability, we discuss the general issue of the use of quality functions in community detection. Our main conclusion is that quality functions are useful to compare partitions with the same number of modules, whereas the comparison of partitions with different numbers of modules is not straightforward and may lead to ambiguities.

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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