Group multi-criteria decision making based upon interval-valued fuzzy numbers: An extension of the MULTIMOORA method

Multi criteria decision making (MCDM) often involves uncertainty which can be tackled by employing the fuzzy set theory. Type-2 fuzzy sets offer certain additional means for the latter purpose. This paper therefore extends the MULTIMOORA method with type-2 fuzzy sets viz. generalized interval-valued trapezoidal fuzzy numbers. The proposed method thus provides the means for multi-criteria decision making related to uncertain assessments. Utilization of aggregation operators also enables to facilitate group multi-criteria decision making. A numerical example of personnel selection demonstrates the possibilities of application of the proposed method in the field of human resource management and performance management in general.

► The MULTIMOORA method is extended with type-2 fuzzy sets.
► Generalized interval-valued trapezoidal fuzzy numbers are employed for MCDM.
► GITFNOWGA operator is used to aggregate expert assessments.
► A numerical example of personnel selection is provided.