arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.04213cs.SI
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基于容量释放扩散的局部超图聚类

Local Hypergraph Clustering using Capacity Releasing Diffusion

Rania Ibrahim, David F. Gleich

摘要:

局部图聚类是一个重要的机器学习任务,其目标是在一组种子节点附近找到一个连接良好的簇。最近的研究结果表明,纳入高阶信息显着提高了图聚类技术的结果。在这一领域的现有研究大多集中在基于谱图理论的技术。然而,局部图聚类的另一种观点是在目标上使用最大流和最小割,这提供了明显不同的保证。例如,最近提出了一种称为容量释放扩散(CRD)的新方法,并显示出比谱方法更好地保持种子周围的局部结构。该方法也是第一个本地聚类技术,不受二次Cheeger不等式假设一个良好的集群附近的种子节点。在本文中,我们提出了一个本地超图聚类技术,称为超图CRD(HG-CRD)通过扩展CRD过程的基础上聚类高阶模式,编码为超图的超边。此外,我们从理论上表明,HG-CRD给出了一个称为基序电导的量的结果,而不是在以前的实验中使用的有偏见的版本。在人工数据集和真实世界图上的实验结果表明,HG-CRD提高了聚类质量。

英文摘要:

Local graph clustering is an important machine learning task that aims to find a well-connected cluster near a set of seed nodes. Recent results have revealed that incorporating higher order information significantly enhances the results of graph clustering techniques. The majority of existing research in this area focuses on spectral graph theory-based techniques. However, an alternative perspective on local graph clustering arises from using max-flow and min-cut on the objectives, which offer distinctly different guarantees. For instance, a new method called capacity releasing diffusion (CRD) was recently proposed and shown to preserve local structure around the seeds better than spectral methods. The method was also the first local clustering technique that is not subject to the quadratic Cheeger inequality by assuming a good cluster near the seed nodes. In this paper, we propose a local hypergraph clustering technique called hypergraph CRD (HG-CRD) by extending the CRD process to cluster based on higher order patterns, encoded as hyperedges of a hypergraph. Moreover, we theoretically show that HG-CRD gives results about a quantity called motif conductance, rather than a biased version used in previous experiments. Experimental results on synthetic datasets and real world graphs show that HG-CRD enhances the clustering quality.

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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