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arXiv 1706.03591stat.MLmath.SP
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动态网络的快速近似谱聚类

Fast Approximate Spectral Clustering for Dynamic Networks

Lionel Martin, Andreas Loukas, Pierre Vandergheynst

摘要:

谱聚类是一个被广泛研究的问题,但它的复杂性是令人望而却步的动态图,甚至适度的大小。我们声称,它是可能的重用信息,过去的集群分配,以加快计算。我们的方法建立在最近的想法,回避谱聚类的主要瓶颈,即,利用随机信号的快速Chebyshev图滤波计算图特征向量。我们表明,该算法实现聚类分配的质量近似的谱聚类,它可以产生显着的复杂性的好处时,图的动态是适当的有界。

英文摘要:

Spectral clustering is a widely studied problem, yet its complexity is prohibitive for dynamic graphs of even modest size. We claim that it is possible to reuse information of past cluster assignments to expedite computation. Our approach builds on a recent idea of sidestepping the main bottleneck of spectral clustering, i.e., computing the graph eigenvectors, by using fast Chebyshev graph filtering of random signals. We show that the proposed algorithm achieves clustering assignments with quality approximating that of spectral clustering and that it can yield significant complexity benefits when the graph dynamics are appropriately bounded.

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