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Improved ε-Constraint Method for Multiobjective Programming

Research output: Contribution to journalJournal articlepeer-review

<mark>Journal publication date</mark>1/09/2008
<mark>Journal</mark>Journal of Optimization Theory and Applications
Issue number3
Number of pages22
Pages (from-to)375-396
Publication StatusPublished
<mark>Original language</mark>English


In this paper, we revisit one of the most important scalarization techniques used in multiobjective programming, the ε-constraint method. We summarize the method and point out some weaknesses, namely the lack of easy-to-check conditions for properly efficient solutions and the inflexibility of the constraints. We present two modifications that address these weaknesses by first including slack variables in the formulation and second elasticizing the constraints and including surplus variables. We prove results on (weakly, properly) efficient solutions. The improved ε-constraint method that we propose combines both modifications.