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Issue No.02 - February (2012 vol.24)

pp: 209-219

Xiao-Tong Yuan , Rutgers University, Newark

Ran He , Institute of Automation Chinese Academy of Sciences, Beijing

DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/TKDE.2010.232

ABSTRACT

Mean-Shift (MS) is a powerful nonparametric clustering method. Although good accuracy can be achieved, its computational cost is particularly expensive even on moderate data sets. In this paper, for the purpose of algorithmic speedup, we develop an agglomerative MS clustering method along with its performance analysis. Our method, namely Agglo-MS, is built upon an iterative query set compression mechanism which is motivated by the quadratic bounding optimization nature of MS algorithm. The whole framework can be efficiently implemented in linear running time complexity. We then extend Agglo-MS into an incremental version which performs comparably to its batch counterpart. The efficiency and accuracy of Agglo-MS are demonstrated by extensive comparing experiments on synthetic and real data sets.

INDEX TERMS

Mean-shift, agglomerative clustering, half-quadratic optimization, incremental clustering.

CITATION

Xiao-Tong Yuan, Ran He, "Agglomerative Mean-Shift Clustering",

*IEEE Transactions on Knowledge & Data Engineering*, vol.24, no. 2, pp. 209-219, February 2012, doi:10.1109/TKDE.2010.232REFERENCES