Tabasam Rashid2018-10-192018-10-192015Beg, I., & Rashid, T. (2015). A geometric aggregation operator for decision making. Vietnam Journal of Computer Science, 2(4), 243-255.(Tabasam Rashid)https://escholar.umt.edu.pk/handle/123456789/3378We proposed an aggregation operator which is used to aggregate decision makers’ opinions in group decision making process. First, a Choquet integral-based distance between generalized interval-valued trapezoidal fuzzy numbers is defined. Then combining the generalized intervalvalued trapezoidal fuzzy number aggregation operator with Choquet integral-based distance, an extension of technique for order preference by similarity to ideal solution method is developed to deal with a multi-criteria generalized intervalvalued trapezoidal fuzzy number group decision making problems, where inter-dependent or interactive characteristics among criteria preference of decision makers are also considered. Finally, an illustrative example is provided to elaborate the proposed method.enMathematicsMulti-criteria group decision making · Generalized interval-valued trapezoidal fuzzy numbers · Fuzzy measures · Technique for order preference by similarity to ideal solutionArticle