Article ID: | iaor20032419 |
Country: | Netherlands |
Volume: | 117 |
Issue: | 1 |
Start Page Number: | 191 |
End Page Number: | 213 |
Publication Date: | Nov 2002 |
Journal: | Annals of Operations Research |
Authors: | Fernandez Eduardo, Navarro Jorge |
Keywords: | decision theory: multiple criteria, fuzzy sets |
When an organization solves a portfolio problem with public projects evaluated by multiple criteria, in which the economic dimension is not essential or not well characterized, the classical methods are not useful. We propose a non-linear preference model developed from normative Value Theory and using fuzzy sets to model some sources of imprecision. This model can be considered as a generalization of the classical approaches. However, the optimization problem is very complex in order to be solved with non-linear programming techniques. Therefore, the model is exploited by an evolutionary algorithm, able to achieve a strong improvement of the quality of solution.