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Feature selection in linear SVMs via hard cardinality constraint: a scalable SDP decomposition approach
April 17, 2024, 4:42 a.m. | Immanuel Bomze, Federico D'Onofrio, Laura Palagi, Bo Peng
cs.LG updates on arXiv.org arxiv.org
Abstract: In this paper, we study the embedded feature selection problem in linear Support Vector Machines (SVMs), in which a cardinality constraint is employed, leading to a fully explainable selection model. The problem is NP-hard due to the presence of the cardinality constraint, even though the original linear SVM amounts to a problem solvable in polynomial time. To handle the hard problem, we first introduce two mixed-integer formulations for which novel SDP relaxations are proposed. Exploiting …
abstract arxiv cs.lg embedded feature feature selection linear machines math.oc np-hard paper scalable study support support vector machines type vector via
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