Vol. 7, Issue 2, Part B (2025)

In this paper, Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) using the fuzzy score function of decision makers’ weights (FSFDMW) in fuzzy set decision making problem is proposed to select the types of grinding machine and air classifier in dry grinding-classification process. Firstly, we consider how to select the main criteria among possible criteria that affect rational alternative decision making by using fuzzy score function with decision makers’ weights, and propose a method to determine the weights of the main criteria by fuzzy score function with decision makers’ weights. Then, we propose a TOPSIS method using fuzzy scoring functions with the decision makers’ weights and choose a suitable types of grinding machine and air classifier for dental gypsum grinding.