arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1806.07944cs.SIcs.LGstat.ML
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在图中搜索单个社区

Searching for a Single Community in a Graph

The University of Texas at Austin(德克萨斯大学奥斯汀分校)

Avik Ray, Sujay Sanghavi, Sanjay Shakkottai

摘要:

在标准图聚类/社区发现中,人们感兴趣的是将图划分成更密集连接的节点子集。相比之下,本文的“搜索”问题旨在从可能存在的许多社区中只找到“单个”社区(目标)中的节点。为了做到这一点,我们会得到关于目标的适当的边信息;例如,来自目标的极少数节点被标记为这样。我们考虑一个一般而简单的边信息概念:假设所有节点都具有随机权重,目标中的节点平均具有更高的权重。给定这些权重和图形,我们开发了一种变体的矩量法,它可以更可靠地识别目标中的节点,并且计算量较低,比不使用边信息并划分整个图形的通用社区发现方法。我们的实证结果表明,显着的收益在运行时,也获得了其他图聚类算法的准确性。

英文摘要:

In standard graph clustering/community detection, one is interested in partitioning the graph into more densely connected subsets of nodes. In contrast, the "search" problem of this paper aims to only find the nodes in a "single" such community, the target, out of the many communities that may exist. To do so , we are given suitable side information about the target; for example, a very small number of nodes from the target are labeled as such. We consider a general yet simple notion of side information: all nodes are assumed to have random weights, with nodes in the target having higher weights on average. Given these weights and the graph, we develop a variant of the method of moments that identifies nodes in the target more reliably, and with lower computation, than generic community detection methods that do not use side information and partition the entire graph. Our empirical results show significant gains in runtime, and also gains in accuracy over other graph clustering algorithms.

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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