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The generalized assignment problem: Valid inequalities and facets

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Abstract

Three classes of valid inequalities based upon multiple knapsack constraints are derived for the generalized assignment problem. General properties of the facet defining inequalities are discussed and, for a special case, the convex hull is completely characterized. In addition, we prove that a basic fractional solution to the linear programming relaxation can be eliminated by a facet defining inequality associated with an individual knapsack constraint.

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Partial financial support under NSF grant #CCR-8812736.

Partial financial support under NSF grant #DMS-8606188.

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Gottlieb, E.S., Rao, M.R. The generalized assignment problem: Valid inequalities and facets. Mathematical Programming 46, 31–52 (1990). https://doi.org/10.1007/BF01585725

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