Abstract
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 J. Kacprzyk (1985, 1986). This rule is viewed in this paper from a more general perspective, and the fuzzy majority - meant as a fuzzy linguistic quantifier - is dealt with by using R.R. Yager's (1988) ordered weighted averaging (OWA) operators. The particular collective choice rules derived via the general scheme proposed are shown to be applicable in the case of non-fuzzy preferences too.
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