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Decision Making by Applying Z-Numbers

Abstract:

The article presents a model for selecting the recruitment of a soccer player for a Spanish Second Division soccer team. Considering that this is a very complex model, which can be approached from several aspects, this paper is limited only to the criteria related to the recruitment or disposition of the player. Decision making (DM) is still an open question. Zadeh has developed Z-number for modelling fuzzy numbers with the degree of confidence. In this paper, a new DM method based on Z-number is proposed to deal with linguistic decision making problems. The decision making process can be easily carried out using Z-number calculations. A numerical example on DM is used to exemplify the effectiveness of the proposed method. The Z-numbers in the decision making matrix are converted to the crisp numbers for decision making, which is very important for deciding in soccer injury situations.