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- W2015950538 abstract "Multi-label support vector machine with a zero label (Rank-SVMz) is an effective SVM-type technique for multi-label classification, which is formulated as a quadratic programming (QP) problem with several disjoint equality constraints and lots of box ones, and then is solved by Frank–Wolfe method (FWM) embedded one-versus-rest (OVR) decomposition trick. However, it is still highly desirable to speed up the training and testing procedures of Rank-SVMz for many real world applications. Due to the special disjoint equality constraints, all variables to be solved in Rank-SVMz are naturally divided into several blocks via OVR technique. Therefore we propose a random block coordinate descent method (RBCDM) for Rank-SVMz in this paper. At each iteration, an entire QP problem is divided into a series of small-scale QP sub-problems, and then each QP sub-problem with a single equality constraint and many box ones is solved by sequential minimization optimization (SMO) used in binary SVM. The theoretical analysis shows that RBCDM has a much lower time complexity than FWM for Rank-SVMz. Our experimental results on six benchmark data sets demonstrate that, on the average, RBCDM runs 11 times faster, produces 12% fewer support vectors, and achieves a better classification performance than FWM for Rank-SVMz. Therefore Rank-SVMz with RBCDM is a powerful candidate for multi-label classification." @default.
- W2015950538 created "2016-06-24" @default.
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- W2015950538 date "2014-06-01" @default.
- W2015950538 modified "2023-09-26" @default.
- W2015950538 title "Random block coordinate descent method for multi-label support vector machine with a zero label" @default.
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- W2015950538 doi "https://doi.org/10.1016/j.eswa.2013.12.004" @default.
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