On generalized similarity measures for Pythagorean fuzzy sets and their applications to multiple attribute decision-making
- Publisher:
- Wiley
- Publication Type:
- Journal Article
- Citation:
- International Journal of Intelligent Systems, 2019, 34, (10), pp. 2556-2583
- Issue Date:
- 2019-01-01
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© 2019 Wiley Periodicals, Inc. In this paper, we develop a new and flexible method for Pythagorean fuzzy decision-making using some trigonometric similarity measures. We first introduce two new generalized similarity measures between Pythagorean fuzzy sets based on cosine and cotangent functions and prove their validity. These similarity measures include some well-known Pythagorean fuzzy similarity measures as their particular and limiting cases. The measures are demonstrated to satisfy some very elegant properties which prepare the ground for applications in different areas. Further, the work defines a generalized hybrid trigonometric Pythagorean fuzzy similarity measure and discuss its properties with particular cases. Then, based on the generalized hybrid trigonometric Pythagorean fuzzy similarity measure, a method for dealing with multiple attribute decision-making problems under Pythagorean fuzzy environment is developed. Finally, a numerical example is given to demonstrate the flexibility and effectiveness of the developed approach in solving real-life problems.
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