Abstract :
In the process of decision making, the necessity of aggregation of input
arguments into a single output becomes a key step; as a result, the selection of an
appropriate aggregation operator is a vital aspect. The aim of this contribution is threefold.
First, we study algebraic operations of Trapezoidal Intuitionistic Fuzzy Numbers (TrIFNs),
and then on the basis of these operational laws, we de ne four types of harmonic mean
operators with TrIFNs. Second, the required properties of the proposed operators are
reviewed. After that, an approach based on the proposed operators is introduced to solve
a group decision making problem. Finally, a practical example is furnished to demonstrate
the applicability of the proposed operators in the decision making context. The contribution
ends by introducing comparative analysis of the obtained result
