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International Journal for Uncertainty Quantification
A new improved score function of an interval-valued pythagorean fuzzy set based TOPSIS method
Thapar University Patiala
In the present study, an improved score function for the ranking order of interval-valued Pythagorean fuzzy sets (IVPFSs) has been proposed. Based on it, a Pythagorean fuzzy Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) method by taking the preferences of the experts in the form of interval-valued intuitionistic Pythagorean fuzzy decision matrices has been presented. A positive and negative ideal separation measures solution has been computed based on the proposed score function to determine the relative closeness coefficient and hence the most desirable one(s) is selected. Finally, an illustrative example for multi-criteria decision-making (MCDM) problem has been taken to demonstrate the proposed approach.
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