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arXiv 1306.3398physics.soc-phcs.DMcs.SI
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社区结构中的重要尺度

Significant Scales in Community Structure

V. A. Traag, G. Krings, P. Van Dooren

摘要:

许多复杂的网络显示出模块化结构的迹象,通过社区检测发现。虽然许多方法成功地揭示了各种分区,但仍然难以检测某个分区在什么尺度上是重要的。这个问题在多分辨率方法中表现得最为突出。我们在这里介绍一种有效的方法,用于扫描分辨率在这样的方法之一。此外,我们引入了分区的“重要性”的概念,基于子图概率。重要性与所使用的确切方法无关,因此也可以应用于其他方法,并且可以解释为通过使用分区对图进行编码的增益。使用显著性,我们可以确定“好”的分辨率参数,我们在基准网络上演示了这一点。此外,优化显著性本身也表现出优异的性能。我们展示了我们的方法从欧洲议会的投票数据。我们的分析表明,欧洲议会在意识形态上越来越分裂,国籍不起作用。

英文摘要:

Many complex networks show signs of modular structure, uncovered by community detection. Although many methods succeed in revealing various partitions, it remains difficult to detect at what scale some partition is significant. This problem shows foremost in multi-resolution methods. We here introduce an efficient method for scanning for resolutions in one such method. Additionally, we introduce the notion of "significance" of a partition, based on subgraph probabilities. Significance is independent of the exact method used, so could also be applied in other methods, and can be interpreted as the gain in encoding a graph by making use of a partition. Using significance, we can determine "good" resolution parameters, which we demonstrate on benchmark networks. Moreover, optimizing significance itself also shows excellent performance. We demonstrate our method on voting data from the European Parliament. Our analysis suggests the European Parliament has become increasingly ideologically divided and that nationality plays no role.

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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