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03-05-2020 | Original Article | Issue 10/2020

International Journal of Machine Learning and Cybernetics 10/2020

Multiplication fusion of sparse and collaborative-competitive representation for image classification

Journal:
International Journal of Machine Learning and Cybernetics > Issue 10/2020
Authors:
Zi-Qi Li, Jun Sun, Xiao-Jun Wu, He-Feng Yin
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Abstract

Representation based classification methods have become a hot research topic during the past few years, and the two most prominent approaches are sparse representation based classification (SRC) and collaborative representation based classification (CRC). CRC reveals that it is the collaborative representation rather than the sparsity that makes SRC successful. Nevertheless, the dense representation of CRC may not be discriminative which will degrade its performance for classification tasks. To alleviate this problem to some extent, we propose a new method called sparse and collaborative-competitive representation based classification (SCCRC) for image classification. Firstly, the coefficients of the test sample are obtained by SRC and CCRC, respectively. Then the fused coefficient is derived by multiplying the coefficients of SRC and CCRC. Finally, the test sample is designated to the class that has the minimum residual. Experimental results on several benchmark databases demonstrate the efficacy of our proposed SCCRC. The source code of SCCRC is accessible at https://​github.​com/​li-zi-qi/​SCCRC.

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