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A successive domain-reduction scheme for linearly constrained quadratic integer programming problems

Fenlan Wang

Journal of the Operational Research Society, 2021, vol. 72, issue 10, 2317-2330

Abstract: A new exact solution method is developed in this paper for solving nonseparable linearly constrained quadratic integer programming problems with convex, concave or indefinite objective functions. By exploiting the special characteristics of the quadratic contour and examining the neighboring integer points of the continuous optimal solution from the continuous relaxation problem that discards the integer constraint of the original problem, cut off these sub-boxes which do not contain any optimal solution of the original problem. Integrating such solution scheme into a branch-and-bound algorithm, the proposed solution method reduces the optimality gap successively in the solution iterations. Furthermore, the proposed solution method is of a finite-step convergence, as domain cut is valid in each iteration.

Date: 2021
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DOI: 10.1080/01605682.2020.1784047

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