ZHAO Hui, HUANG Jing-tao, TAN Shu-cai. Research on Classification of Imbalanced Data Based on Least Squares Support Vector Machine[J]. 2010, 27(4): 33-37.
ZHAO Hui, HUANG Jing-tao, TAN Shu-cai. Research on Classification of Imbalanced Data Based on Least Squares Support Vector Machine[J]. 2010, 27(4): 33-37.DOI:
To improve the classification performance of unbalanced datasets
the nature characteristics of sparse least squares support vector machines (LS-SVM) was analyzed and an algorithm based on center distance ratio for the unbalanced samples was proposed. Meanwhile
the problem of sparseness lacking in the least squares support vector machines was solved by pruning the boundary samples. The new algorithm was tested on the UCI datasets. The results indicate that this method can effectively improve the classification accuracy of LS-SVM for the unbalanced samples
the proposed algorithm can properly obtain the sparse solutions without affecting the capacity of classification