T-spherical fuzzy COPRAS method for multi-criteria decision-making problem

Article type: Research Article

Authors: Fan, Jianping | Han, Dongshuai | Wu, Meiqin^{; *}

Affiliations: School of Economics and Management, Shanxi University, Taiyuan, China

Correspondence: [*] Corresponding author. Meiqin Wu, School of Economics and Management, Shanxi University, Taiyuan 030006, China. E-mail: [email protected].

Abstract: In this manuscript, we introduce a multi-criteria decision-making (MCDM) method under T-spherical fuzzy set environment. Firstly, we propose a method to use the correlation coefficient and standard deviation (CCSD) method to determine the attribute weight under T-spherical fuzzy environment, when the attribute weight information is completely unknown or partially unknown. Secondly, we introduce a T-spherical fuzzy complex proportional assessment (COPRAS) method. Finally, a numerical example is given to illustrate the application of the T-spherical fuzzy COPRAS method, and some comparative analysis is carried out to verify the feasibility and effectiveness of the proposed method.

Keywords: T-spherical fuzzy sets (T-SFSs), T-spherical fuzzy set numbers (T-SFSNs), the correlation coefficient and standard deviation (CCSD) method, complex proportional assessment (COPRAS)

DOI: 10.3233/JIFS-213227

Journal: Journal of Intelligent & Fuzzy Systems, vol. 43, no. 3, pp. 2789-2801, 2022