Stochastic binary problems with simple penalties for capacity constraints violations

This paper studies stochastic programs with first-stage binary variables and capacity constraints, using simple penalties for capacities violations. In particular, we take a closer look at the knapsack problem with weights and capacity following independent random variables and prove that the proble...

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Vydané v:Mathematical programming Ročník 138; číslo 1-2; s. 199 - 221
Hlavní autori: Fortz, B., Labbé, M., Louveaux, F., Poss, M.
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Berlin/Heidelberg Springer-Verlag 01.04.2013
Springer Nature B.V
Springer Verlag
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ISSN:0025-5610, 1436-4646, 1436-4646
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Shrnutí:This paper studies stochastic programs with first-stage binary variables and capacity constraints, using simple penalties for capacities violations. In particular, we take a closer look at the knapsack problem with weights and capacity following independent random variables and prove that the problem is weakly -hard in general. We provide pseudo-polynomial algorithms for three special cases of the problem: constant weights and capacity uniformly distributed, subset sum with Gaussian weights and strictly positively distributed random capacity, and subset sum with constant weights and arbitrary random capacity. We then turn to a branch-and-cut algorithm based on the outer approximation of the objective function. We provide computational results for the stochastic knapsack problem (i) with Gaussian weights and constant capacity and (ii) with constant weights and capacity uniformly distributed, on randomly generated instances inspired by computational results for the knapsack problem.
Bibliografia:SourceType-Scholarly Journals-1
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scopus-id:2-s2.0-84875435973
ISSN:0025-5610
1436-4646
1436-4646
DOI:10.1007/s10107-012-0520-4