Properties of fuzzy relations and aggregation process in decision making

In this contribution connections between input fuzzy relations R۱, . . . ,Rn on a set X and the output fuzzy relationRF = F(R۱, . . . ,Rn) are studied. F is a function of the form F : [۰, ۱]n → [۰, ۱] and RF is called an aggregated fuzzyrelation. In the literature the problem of preservation, by a function F, diverse types of properties of fuzzy relationsR۱, . . . ,Rn is examined. Here, it is considered the converse approach. Namely, fuzzy relation RF = F(R۱, . . . ,Rn) isassumed to have a given property and then it is checked if fuzzy relations R۱, . . . ,Rn have this property. Moreover, adiscussion on the mentioned two approaches is provided. The properties, which are examined in this paper, depend ontheir notions on binary operations B : [۰, ۱]۲ → [۰, ۱]. By incorporating operation B these properties are generalizedversions of known properties of fuzzy relations.

کلیدواژه ها:

Fuzzy relation ، aggregation function ، Decision making