Applying OWA Operators and RIM Quantifiers to measure Consensus with Large Groups of Experts

Consensus based approaches provide a way to drive group decisions which are more accepted and appreciated by decision makers. Different consensus approaches and methodologies have been proposed to conduct these processes successfully, but there still remain some aspects that must be further studied, such as the use and effects of different aggregation operators to measure consensus in the group. This paper shows the application of ordered weighted averaging (OWA) operators based on linear RIM (Regular Increasing Monotone) quantifiers in a consensus support system, and analyzes the impact of using them to measure consensus in decision problems with a large number of experts participating.