Solving multi-level multi-objective linear programming problems through fuzzy goal programming approach, Applied Mathematical Modelling, vol. null, no. null, pp. null.
Applied Mathematical Modelling • 2009
Publication Information
Authors
Ibrahim A. Baky
Keywords
Not Available
Journal
Applied Mathematical Modelling
Publisher
Not Available
Volume
34
Issue
9
Pages
2377-238
publication.type
International
Paper Link
Not Available
Supplementary Materials
Not Available
Abstract
In this paper, two new algorithms are presented to solve multi-level multi-objective linear programming (ML-MOLP) problems through the fuzzy goal programming (FGP) approach. The membership functions for the defined fuzzy goals of all objective functions at all levels are developed in the model formulation of the problem; so also are the membership functions for vectors of fuzzy goals of the decision variables, controlled by decision makers at the top levels. Then the fuzzy goal programming approach is used to achieve the highest degree of each of the membership goals by minimizing their deviational variables and thereby obtain the most satisfactory solution for all decision makers. The first suggested algorithm groups the membership functions for the defined fuzzy goals of the objective functions at all levels and the decision variables for each level except the lower level of the multi-level problem. The second proposed algorithm lexicographically solves MOLP problems of the ML-MOLP problem by taking into consideration the decisions of the MOLP problems for the upper levels. An illustrative numerical example is given to demonstrate the algorithms.
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