... approach, an impact relationship map between variables can be created. This situation contributes to the identification of the causality relationship between the criteria. In addition, using the fuzzy logic approach in the analysis process is an important originality of the study. Determining the most...

.... Fuzzy logic provides a useful tool for dealing with decisions in which the phenomena are vague. Design/methodology/approach The present research was performed among bank customers. The required information was gathered through a designed questionnaire. Using fuzzy set theory, customers' perceptions...