Abstract
The membership function of a general type-2 fuzzy set is three-dimensional in order to incorporate its vagueness through the third dimension. Similarly, Circular intuitionistic fuzzy sets (CIFSs) have been recently introduced by Atanassov (2020) as a new extension of intuitionistic fuzzy sets, which are represented by a circle representing the vagueness of the membership function. CIFSs allow decision-makers to express their judgments including this vagueness. In this study, the TOPSIS method, which is one of the most used multi-criteria decision-making methods is extended to its CIF version. The proposed CIF-TOPSIS methodology is applied to the supplier selection problem. Then, a sensitivity analysis based on criteria weights is conducted to check the robustness of the proposed approach. A comparative analysis with single-valued intuitionistic fuzzy TOPSIS method is also performed to verify the developed approach and to demonstrate its effectiveness.
Original language | English |
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Pages (from-to) | 24-52 |
Number of pages | 29 |
Journal | Notes on Intuitionistic Fuzzy Sets |
Volume | 27 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2021 |
Bibliographical note
Publisher Copyright:© 2021, "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences. All rights reserved.
Keywords
- Circular intuitionistic fuzzy sets
- Intuitionistic fuzzy sets
- MCDM
- Supplier selection
- TOPSIS