Group decision making by a last aggregation approach under interval-valued Pythagorean fuzzy environment for sustainable project decision

Seyed Meysam Mousavi | V. Mohagheghi

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URL :   http://research.shahed.ac.ir/WSR/WebPages/Report/PaperView.aspx?PaperID=158795
Date :  2021/07/14
Publish in :    International Journal of Science and Technology, Scientia Iranica

Link :  http://scientiairanica.sharif.edu/article_22195.html
Keywords :Group decision making, interval-valued Pythagorean fuzzy sets (IVPFSs), linear assignment method (LAM), last aggregation, ranking IVPFSs, sustainable project evaluation

Abstract :

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Interval-valued Pythagorean fuzzy sets (IVPFSs) as enhanced type of Pythagorean fuzzy sets (PFSs) improve the expression of the degrees of membership, non-membership and hesitancy in comparison with intuitionistic fuzzy sets (IFSs). In this paper, to use the advantages of IVPFSs a new group decision-making method is introduced based on linear assignment method (LAM). In this approach, subjective and objective weights of criteria are taken into account. Moreover, the method applies a new ranking method for IVPFSs. To avoid the shortcomings of first aggregation methods, the introduced decision-making approach involves a last aggregation approach. Finally, the method is used in a case study of sustainable project evaluation in order to depict the applicability of this method.