arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.03950cs.DS
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挖掘具有相似边的稠密子图

Mining Dense Subgraphs with Similar Edges

Polina Rozenshtein, Giulia Preti, Aristides Gionis, Yannis Velegrakis

摘要:

当在图中搜索有趣的结构时,通常不仅要考虑图的连通性,还要考虑可用的元数据,例如节点和边标签或时间信息。在本文中,我们感兴趣的设置,这样的元数据被用来定义边缘之间的相似性。我们考虑的问题,找到子图是密集的,其边缘是彼此相似的一个给定的相似性函数。根据应用,该函数可以是例如边缘标签集之间的Jaccard相似性,或者时间图中边缘出现的时间相关性。我们制定了一个拉格朗日松弛为基础的优化问题,以寻找密集的子图具有高的成对边相似性。我们设计了一个新的算法来解决这个问题,通过参数MinCut,并提供了一个有效的搜索方案,通过拉格朗日乘子的值。我们的研究是由现实世界的数据集,这表明了所提出的方法的实用性和效率的评估补充。

英文摘要:

When searching for interesting structures in graphs, it is often important to take into account not only the graph connectivity, but also the metadata available, such as node and edge labels, or temporal information. In this paper we are interested in settings where such metadata is used to define a similarity between edges. We consider the problem of finding subgraphs that are dense and whose edges are similar to each other with respect to a given similarity function. Depending on the application, this function can be, for example, the Jaccard similarity between the edge label sets, or the temporal correlation of the edge occurrences in a temporal graph. We formulate a Lagrangian relaxation-based optimization problem to search for dense subgraphs with high pairwise edge similarity. We design a novel algorithm to solve the problem through parametric MinCut, and provide an efficient search scheme to iterate through the values of the Lagrangian multipliers. Our study is complemented by an evaluation on real-world datasets, which demonstrates the usefulness and efficiency of the proposed approach.

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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