Lifted cover facets of the 0-1 knapsack polytope with GUB constraints

  • Authors:
  • George L. Nemhauser;Pamela H. Vance

  • Affiliations:
  • School of Industrial and Systems Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0205, USA;Department of Industrial Engineering, Auburn University, Auburn, AL 36849-5346, USA

  • Venue:
  • Operations Research Letters
  • Year:
  • 1994

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Abstract

Facet-defining inequalities lifted from minimal covers are used as strong cutting planes in algorithms for solving 0-1 integer programming problems. In this paper we extend the result of Balas and Zemel by giving a set of inequalities that determines the lifting coefficients of facet-defining inequalities of the 0-1 knapsack polytope for any ordering of the variables to be lifted. We further generalize the result to obtain facet-defining inequalities for the 0-1 knapsack problem with generalized upper bound constraints.