Collective choice rules in group decision making under fuzzy preferences and fuzzy majority: a unified OWA operator based approach

摘要

A general form of a collective choice rule in group decision making under fuzzy preferences and a fuzzy majority is proposed. It encompasses some well-known choice rules. Our point of departure is the fuzzy majority based linguistic aggregation rule (solution concept) proposed by Kacprzyk (1985a,b; 1986). This rule is viewed here from a more general perspective, and the fuzzy majority - meant as a fuzzy linguistic quantifier - is dealt with by using Yager's (1988) OWA operators. The particular collective choice rules derived via the general scheme proposed are shown to be applicable in the case of nonfuzzy preferences too.