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Computational results of a semidefinite branch-and-bound algorithm for k-cluster

Nathan Krislock 1, * Jérôme Malick 2 Frédéric Roupin 3 
* Corresponding author
2 BIPOP - Modelling, Simulation, Control and Optimization of Non-Smooth Dynamical Systems
Inria Grenoble - Rhône-Alpes, Grenoble INP - Institut polytechnique de Grenoble - Grenoble Institute of Technology, LJK - Laboratoire Jean Kuntzmann
Abstract : This computational paper presents a method to solve k-cluster problems exactly by intersecting semidefinite and polyhedral relaxations. Our algorithm uses a generic branch-and-bound method featuring an improved semidefinite bounding procedure. Extensive numerical experiments show that this algorithm outperforms the best known methods both in time and ability to solve large instances. For the first time, numerical results are reported for k-cluster problems on unstructured graphs with 160 vertices.
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Submitted on : Friday, February 6, 2015 - 7:20:54 PM
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Nathan Krislock, Jérôme Malick, Frédéric Roupin. Computational results of a semidefinite branch-and-bound algorithm for k-cluster. Computers and Operations Research, Elsevier, 2016, 66, pp.153-159. ⟨10.1016/j.cor.2015.07.008⟩. ⟨hal-00717212v6⟩



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