PROMETHEE: an extension through fuzzy mathematical programming

PROMETHEE: an extension through fuzzy mathematical programming

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Article ID: iaor20062230
Country: United Kingdom
Volume: 56
Issue: 1
Start Page Number: 119
End Page Number: 122
Publication Date: Jan 2005
Journal: Journal of the Operational Research Society
Authors: ,
Keywords: fuzzy sets
Abstract:

PROMETHEE multi-criteria methods are based on fuzzy evaluations of the differences between pairs of alternatives for each criterion. PROMETHEE II associates a crisp number to each action. PROMETHEE III associates an interval to each action and two actions are considered indifferent when they are very close to each other. PROMETHEE V applies Integer Linear Programming in order to select the subset of alternatives that maximizes the sum of PROMETHEE II scorings, subject to a set of constraints. In order to make the model more realistic, this paper proposes that some constraints are soft and some coefficients are estimated by fuzzy numbers. Fuzzy Integer Linear Programming is applied, using the PROMETHEE III scorings as objective function coefficients, in order to find the subsets of non-outranked alternatives that best satisfy the soft constraints. The new model is more realistic and fits better the fuzzy philosophy of PROMETHEE. The method is illustrated with an example.

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