A Faster Algorithm to Update Betweenness Centrality After Node Alteration

Q3 Mathematics Internet Mathematics Pub Date : 2013-12-14 DOI:10.1080/15427951.2014.982311
Keshav Goel, R. Singh, S. Iyengar, Sukrit Gupta
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引用次数: 40

Abstract

Betweenness centrality is widely used as a centrality measure, with applications across several disciplines. It is a measure that quantifies the importance of a vertex based on the vertex’s occurrence on shortest paths in a graph. This is a global measure, and in order to find the betweenness centrality of a node, one is supposed to have complete information about the graph. Most of the algorithms that are used to find betweenness centrality assume the constancy of the graph and are not efficient for dynamic networks. We propose a technique to update betweenness centrality of a graph when nodes are added or deleted. Observed experimentally, for real graphs, our algorithm speeds up the calculation of betweenness centrality from 7 to 412 times in comparison to the currently best-known techniques.
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一种节点改变后间性中心性更新的快速算法
中间中心性作为一种中心性度量被广泛使用,其应用跨越多个学科。它是一种基于顶点在图中最短路径上出现的次数来量化顶点重要性的度量。这是一个全局度量,为了找到一个节点的中间性中心性,一个人应该有关于图的完整信息。大多数用于寻找中间性中心性的算法都假设了图的恒定性,对于动态网络来说效率不高。提出了一种在增加或删除节点时更新图的中间性中心性的方法。通过实验观察,对于真实的图,与目前最著名的技术相比,我们的算法将中间性中心性的计算速度从7倍提高到412倍。
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Internet Mathematics
Internet Mathematics Mathematics-Applied Mathematics
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