TODIM Multi-attribute Decision-Making Method Based on Spherical Fuzzy Sets

To solve the problem of wider fields of preference, taking into account the influence of risk attitudes of decision makers on decision outcomes and their membership degree, non-membership degree and hesitation degree squared less than or equal to 1, this article proposes to deploy the TODIM method extends to the spherical fuzzy set (SFS) to solve the problem of multi-attribute decision making. First, construct the initial decision matrix of alternatives on attributes and the weight matrix of decision makers on attributes; Then select the reference attributes to get the relative weight of each attribute relative to the reference attribute; The size of the score function value is used as the judgment basis to obtain the dominance among the alternatives; finally, the overall relative dominance of each alternative is calculated to obtain the ranking result. By selecting an example of a green supplier, the feasibility and effectiveness of the method are checked, comparison with the SFS-TOPSIS, SFS-VIKOR and SFS-DEMATEL methods. The results show that the method proposed in this paper does not ignore the decision makers. The impact of risk attitudes on decision making outcomes is in line with the actual situation of decision makers and is effective and achievable.