Hossein Moosaei, Fatemeh Bazikar, Saeed Ketabchi, and Milan Hladík. Universum parametric-margin $\nu$-support vector machine for classification using the difference of convex functions algorithm. Appl. Intell., 52(3):2634–2654, 2022.
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Universum data that do not belong to any class of a classification problem can be exploited to utilize prior knowledge to improve generalization performance. In this paper, we design a novel parametric $\nu$-support vector machine with universum data ($\mathfrakU$Par-$\nu$-SVM). Unlabeled samples can be integrated into supervised learning by means of $\mathfrakU$Par-$\nu$-SVM.We propose a fast method to solve the suggested problem of $\mathfrakU$Par-$\nu$-SVM. The primal problem of $\mathfrakU$Par-$\nu$-SVM, which is a nonconvex optimization problem, is transformed into an unconstrained optimization problem so that the objective function can be treated as a difference of two convex functions (DC). To solve this unconstrained problem, a boosted difference of convex functions algorithm (BDCA) based on a generalized Newton method is suggested (named DC-$\mathfrakU$Par-$\nu$-SVM). We examined our approach on UCI benchmark data sets, NDC data sets, a handwritten digit recognition data set, and a landmine detection data set. The experimental results confirmed the effectiveness and superiority of the proposed method for solving classification problems in comparison with other methods.
@article{MooBaz2022a, author = "Hossein Moosaei and Fatemeh Bazikar and Saeed Ketabchi and Milan Hlad\'{\i}k", title = "Universum parametric-margin $\nu$-support vector machine for classification using the difference of convex functions algorithm", journal = "Appl. Intell.", fjournal = "Applied Intelligence", volume = "52", number = "3", pages = "2634-2654", year = "2022", doi = "10.1007/s10489-021-02402-6", issn = "1573-7497", url = "https://link.springer.com/article/10.1007/s10489-021-02402-6", bib2html_dl_html = "https://doi.org/10.1007/s10489-021-02402-6", bib2html_dl_pdf = "https://rdcu.be/cHAms", abstract = "Universum data that do not belong to any class of a classification problem can be exploited to utilize prior knowledge to improve generalization performance. In this paper, we design a novel parametric $\nu$-support vector machine with universum data ($\mathfrak{U}$Par-$\nu$-SVM). Unlabeled samples can be integrated into supervised learning by means of $\mathfrak{U}$Par-$\nu$-SVM.We propose a fast method to solve the suggested problem of $\mathfrak{U}$Par-$\nu$-SVM. The primal problem of $\mathfrak{U}$Par-$\nu$-SVM, which is a nonconvex optimization problem, is transformed into an unconstrained optimization problem so that the objective function can be treated as a difference of two convex functions (DC). To solve this unconstrained problem, a boosted difference of convex functions algorithm (BDCA) based on a generalized Newton method is suggested (named DC-$\mathfrak{U}$Par-$\nu$-SVM). We examined our approach on UCI benchmark data sets, NDC data sets, a handwritten digit recognition data set, and a landmine detection data set. The experimental results confirmed the effectiveness and superiority of the proposed method for solving classification problems in comparison with other methods.", keywords = "Universum; Par-$\nu$-support vector machine; Nonconvex optimization; DC programming; DCA; BDCA; Modified Newton method", }
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