CHOICE PROCESSES FOR NONHOMOGENEOUS GROUP DECISION-MAKING IN LINGUISTIC SETTING

Several choice processes of alternatives for non-homogeneous group dec ision-making problems, assuming linguistic preference relations for ex pressing the opinions of individuals and linguistic values for express ing their respective power or importance degrees, are presented. These processes are designed using two choice degrees of alternatives based on the concept of fuzzy majority: quantifier guided linguistic domina nce degree and quantifier guided linguistic non-dominance degree, bein g the last one a generalization of Orlovski's non-dominated alternativ e concept. In order to deal with non-weighted linguistic information, the linguistic ordered weighted averaging (LOWA) operator is applied. To deal with weighted linguistic information, three operators of lingu istic weighted information aggregation are used: the linguistic weight ed disjunction (LWD) operator, the linguistic weighted conjunction (LW C) operator and the linguistic weighted averaging (LWA) operator. (C) 1998 Elsevier Science B.V.