Agglomerative Mean-Shift Clustering

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Xiao-Tong Yuan, Bao-Gang Hu and Ran He, Agglomerative Mean-Shift Clustering via Query Set Compression, SDM 2009
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Mean-Shift (MS) is a powerful non-parametric clustering method. Although good accuracy can be achieved, its computational cost is particularly expensive even on moderate data sets. For the purpose of algorithm speedup, an agglomerative MS clustering method called Agglo-MS was developed, along with its mode-seeking ability and convergence property analysis. The method is built upon an iterative query set compression mechanism which is motivated by the quadratic bounding optimization nature of MS. The whole framework can be efficiently implemented in linear running time complexity.
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