arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1702.03522stat.MLcs.ITcs.LGmath.IT
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压缩谱聚类的一致性研究

On Consistency of Compressive Spectral Clustering

University of Wisconsin - Madison(威斯康星大学麦迪逊分校);Indian Institute of Science(印度科学学院)

Muni Sreenivas Pydi, Ambedkar Dukkipati

摘要:

谱聚类是图中社区发现的最常用的方法之一。谱聚类算法中的一个关键步骤是对$n{\times}n$图拉普拉斯矩阵进行特征分解,提取其$k$前导特征向量,其中$k$是$n$对象之间所需的聚类数。对于非常大的数据集来说,这是非常复杂的。然而,最近已经表明,它是可能的,通过计算一个近似的频谱嵌入,通过图形滤波的随机信号,绕过本征分解。在本文中,我们分析了通过图过滤随机块模型进行谱聚类的工作。具体来说,我们的稀疏性,维数和过滤器近似误差的一致性算法在恢复种植集群的影响。

英文摘要:

Spectral clustering is one of the most popular methods for community detection in graphs. A key step in spectral clustering algorithms is the eigen decomposition of the $n{\times}n$ graph Laplacian matrix to extract its $k$ leading eigenvectors, where $k$ is the desired number of clusters among $n$ objects. This is prohibitively complex to implement for very large datasets. However, it has recently been shown that it is possible to bypass the eigen decomposition by computing an approximate spectral embedding through graph filtering of random signals. In this paper, we analyze the working of spectral clustering performed via graph filtering on the stochastic block model. Specifically, we characterize the effects of sparsity, dimensionality and filter approximation error on the consistency of the algorithm in recovering planted clusters.

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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