A MODEL OF CONSENSUS IN GROUP DECISION-MAKING UNDER LINGUISTIC ASSESSMENTS

This paper presents a consensus model in group decision making under l inguistic assessments. It is based on the use of linguistic preference s to provide individuals' opinions, and on the use of fuzzy majority o f consensus, represented by means of a linguistic quantifier. Several linguistic consensus degrees and linguistic distances are defined, act ing on three levels. The consensus degrees indicate how far a group of individuals is from the maximum consensus, and linguistic distances i ndicate how far each individual is from current consensus labels over the preferences. This consensus model allows to incorporate more human consistency in decision support systems.