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arXiv 1505.00564cs.SIphysics.soc-ph
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社交网络的结构保持稀疏化

Structure-Preserving Sparsification of Social Networks

Gerd Lindner, Christian L. Staudt, Michael Hamann, Henning Meyerhenke, Dorothea Wagner

摘要:

稀疏化减少了网络的大小,同时保留了感兴趣的结构和统计特性。各种稀疏化算法已被提出在不同的上下文中。我们贡献了第一个系统的概念和实验比较\textit{edge sparsification}方法对一组不同的网络属性。结果表明,它们可以被理解为方法的重要性,然后过滤这些分数的边缘评级。此外,我们提出了一种新的稀疏化方法(\textit{Local Degree}),它保留了导致本地枢纽节点的边缘。所有的方法进行评估,一组100 Facebook的社交网络的网络属性,包括直径,连接组件,社区结构,和多个节点的中心性措施。我们实现的稀疏化方法(使用开源网络分析工具套件NetworkKit)的实验表明,许多网络属性可以保留到约20%的原始边缘集。此外,实验结果使我们能够区分不同方法的行为,并显示哪种方法适用于哪种属性。我们的局部度方法对于大规模网络来说足够快,并且在比以前提出的方法更广泛的属性上表现良好。

英文摘要:

Sparsification reduces the size of networks while preserving structural and statistical properties of interest. Various sparsifying algorithms have been proposed in different contexts. We contribute the first systematic conceptual and experimental comparison of \textit{edge sparsification} methods on a diverse set of network properties. It is shown that they can be understood as methods for rating edges by importance and then filtering globally by these scores. In addition, we propose a new sparsification method (\textit{Local Degree}) which preserves edges leading to local hub nodes. All methods are evaluated on a set of 100 Facebook social networks with respect to network properties including diameter, connected components, community structure, and multiple node centrality measures. Experiments with our implementations of the sparsification methods (using the open-source network analysis tool suite NetworKit) show that many network properties can be preserved down to about 20\% of the original set of edges. Furthermore, the experimental results allow us to differentiate the behavior of different methods and show which method is suitable with respect to which property. Our Local Degree method is fast enough for large-scale networks and performs well across a wider range of properties than previously proposed 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。

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