Multi-objective integer programming: A general approach for generating all non-dominated solutions

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Oezlen M., AZİZOĞLU M.

EUROPEAN JOURNAL OF OPERATIONAL RESEARCH, vol.199, no.1, pp.25-35, 2009 (SCI-Expanded) identifier identifier


In this paper we develop a general approach to generate all non-dominated solutions of the multi-objective integer programming (MOIP) Problem. Our approach, which is based on the identification of objective efficiency ranges, is an improvement over classical epsilon-constraint method. Objective efficiency ranges are identified by solving simpler MOIP problems with fewer objectives. We first provide the classical epsilon-constraint method on the bi-objective integer programming problem for the sake of completeness and comment on its efficiency. Then present our method on tri-objective integer programming problem and then extend it to the general MOIP problem with k objectives. A numerical example considering tri-objective assignment problem is also provided. (C) 2008 Elsevier B.V. All rights reserved.