Overlapping Subspace Clustering Based on Probabilistic Model
QIU Yunfei1,2, FEI Bowen2, LIU Daqian3
1.School of Software, Liaoning Technical University, Huludao 125105 2.School of Business Administration, Liaoning Technical University, Huludao 125105 3.School of Electronic and Information Engineering, Liaoning Technical University, Huludao 125105
Abstract：Due to the low clustering accuracy of the existing subspace clustering methods in dealing with the problem of overlapping clusters, an overlapping subspace clustering algorithm based on probability model(OSCPM) is proposed. Firstly, the high-dimensional data is divided into several subspaces by using the subspace representation of mixed-norm. Then, a probability model of the exponential family distribution is used to determine the overlapping part of the clusters in the subspace, and the data is assigned to the correct class clusters to get the clustering results. An alternating maximization method is used to determine the optimal solution of the objective function in the process of parameter estimation. Experimental results on artificial datasets and UCI datasets show that OSCPM produces better clustering performance compared with other algorithms and it is suitable for large scale datasets.
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2017, Vol. 30 
