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An exact scalarization method with multiple reference points for bi-objective integer linear optimization problems

delete2019-07-24
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Angelo Aliano Filho *
A
Antônio Carlos Moretti
M
Margarida Vaz Pato
W
Washington Alves de Oliveira
DOI:10.1007/s10479-019-03317-9delete
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Abstract

Abstract

En 中文
This paper presents an exact scalarization method to solve bi-objective integer linear optimization problems. This method uses diverse reference points in the iterations, and it is free from any kind of a priori chosen weighting factors. In addition, two new adapted scalarization methods from literature and the modified Tchebycheff method are studied. Each one of them results in different ways to obtain the Pareto frontier. Computational experiments were performed with random real size instances of two special problems related to the manufacturing industry, which involve lot sizing and cutting stock problems. Extensive tests confirmed the very good performance of the new scalarization method with respect to the computational effort, the number of achieved solutions, the ability to achieve different solutions, and the spreading and spacing of solutions at the Pareto frontier.
Keywords:
Bi-objective optimization problems
Integer linear optimization
Exact scalarization methods
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Annals of Operations Research cover
Annals of Operations Research
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