Article (Scientific journals)
Guided Dive for the Spatial Branch-and-Bound
Gerard, Damien; Koeppe, Matthias; Louveaux, Quentin
2017In Journal of Global Optimization
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Keywords :
spatial branch-and-bound; local search; globall optimization
Abstract :
[en] We study the spatial Brand-and-Bound algorithm for the global opti- mization of nonlinear problems. In particular we are interested in a method to find quickly good feasible solutions. Most spatial Branch-and-Bound-based solvers use a non-global solver at a few nodes to try to find better incumbents. We show that it is possible to improve the branching rules and the node priority by exploiting the solutions from the non-global solver. We also propose several smart adaptive strategies to choose when to run the non-global solver. We show that despite the time spent in solving more NLP problems in the nodes, the new strategies enable the algorithm to find the first good incumbents faster and to prove the global opti- mality faster. Numerous easy, medium size as well as hard NLP instances from the Coconut library are benchmarked. All experiments are run using the open source solver Couenne.
Disciplines :
Computer science
Author, co-author :
Gerard, Damien ;  Université de Liège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Dép. d'électric., électron. et informat. (Inst.Montefiore)
Koeppe, Matthias;  University of California, Davis - UC Davis > Department of Mathematics
Louveaux, Quentin ;  Université de Liège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes et modélisation : Optimisation discrète
Language :
English
Title :
Guided Dive for the Spatial Branch-and-Bound
Publication date :
2017
Journal title :
Journal of Global Optimization
ISSN :
0925-5001
eISSN :
1573-2916
Publisher :
Springer
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 30 March 2017

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