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Ranking fuzzy numbers by preference ratio

✍ Scribed by Mohammad Modarres; Soheil Sadi-Nezhad


Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
111 KB
Volume
118
Category
Article
ISSN
0165-0114

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✦ Synopsis


We propose a ranking method for fuzzy numbers. In this method a preference function is deΓΏned by which fuzzy numbers are measured point by point and at each point the most preferred number is identiΓΏed. Then, these numbers are ranked on the basis of their preference ratio. Therefore, fuzzy numbers are compared relatively and not necessarily one is preferred absolutely over the others. This method is especially designed to evaluate alternatives in multi criteria or multi-attribute decision making. The method is intuitive and can be used to discriminate between numbers easily. The method is specially tailored for triangular fuzzy numbers (TFN) and an algorithm is presented to determine the preference ratio of a pair of TFNs. We show that at most two feasible turning points exist. This fact is very helpful to make the algorithm much easier.


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