An enumerative procedure for identifying maximal covers

In this paper we present an enumerative procedure for identifying all maximalcovers from the set of covers implied by a 0-1 knapsack constraint. The inequalitiesinduced by these maximal covers are not dominated by the inequality induced by anyother cover implied by the knapsack constraint. Thus, the...

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Main Author: Muñoz, Susana
Format: Artículo
Language: Español
Published: 2015
Online Access: http://revistas.ucr.ac.cr/index.php/matematica/article/view/233
http://hdl.handle.net/10669/12876
Summary: In this paper we present an enumerative procedure for identifying all maximalcovers from the set of covers implied by a 0-1 knapsack constraint. The inequalitiesinduced by these maximal covers are not dominated by the inequality induced by anyother cover implied by the knapsack constraint. Thus, their identification can help totighten 0-1 models. On the other hand, we present an improvement on a proceduretaken from the literature for identifying certain maximal covers. Some comparativecomputational experiments where both procedures have been applied to randomlygenerated knapsack constraints are also reported.Keywords: Maximal covers, tighter formulations, knapsack constraints, dominated inequalities