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Two-class support vector data description

Two-class support vector data description,10.1016/j.patcog.2010.08.025,Pattern Recognition,Guang-Xin Huang,Huafu Chen,Zhongli Zhou,Feng Yin,Ke Guo

Two-class support vector data description  
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Support vector data description (SVDD) is a data description method that can give the target data set a spherically shaped description and be used to outlier detection or classification. In real life the target data set often contains more than one class of objects and each class of objects need to be described and distinguished simultaneously. In this case, traditional SVDD can only give a description for the target data set, regardless of the differences between different target classes in the target data set, or give a description for each class of objects in the target data set. In this paper, an improved support vector data description method named two-class support vector data description (TC-SVDD) is presented. The proposed method can give each class of objects in the target data set a hypersphere-shaped description simultaneously if the target data set contains two classes of objects. The characteristics of the improved support vector data descriptions are discussed. The results of the proposed approach on artificial and actual data show that the proposed method works quite well on the 3-class classification problem with one object class being undersampled severely.
Journal: Pattern Recognition - PR , vol. 44, no. 2, pp. 320-329, 2011
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