Variable Neighborhood Descent Branching applied to the Multi-Way Number Partitioning Problem
Author(s) -
Alexandre Frias Faria,
Sérgio Ricardo de Souza,
Elisangela Martins de Sá,
Carlos Alexandre Silva
Publication year - 2019
Publication title -
electronic notes in theoretical computer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.242
H-Index - 60
ISSN - 1571-0661
DOI - 10.1016/j.entcs.2019.08.039
Subject(s) - disjoint sets , descent (aeronautics) , mathematics , branching (polymer chemistry) , mathematical optimization , variable (mathematics) , interval (graph theory) , sequence (biology) , algorithm , combinatorics , mathematical analysis , materials science , biology , engineering , composite material , genetics , aerospace engineering
This paper presents an application of the Variable Neighborhood Descent Branching method to solve the Multi-Way Number Partitioning Problem. This problem consists of distributing the elements of a given sequence into k disjoint subsets such that the sums of each subset elements fit in the shortest interval. It shows a new method to decompose the MWNPP in n−1 subproblems using local branching constraints. This decomposing justifies the neighborhood structure used in the proposed algorithm. The study of parameter settings defines the operation of the proposed algorithm. The results shows that there is no statistically significant difference of objective value between proposed algorithm and mathematical model solved by CPLEX, but the time used by both methods are significantly different.
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