Compositions de prédicats sur des quantités graduelles About compositions of predicates on gradual numbers
نویسندگان
چکیده
Based on fuzzy set theory, flexible querying enables users to express preferences inside requirements. Quantifications and preferences on data have led us to define the notion of fuzzy integers ( f). This framework has been extended to f and f, in order to dealing with queries based on difference or division operations. In this paper we study how to define fuzzy order relations between such fuzzy numbers and how to compose predicates using these fuzzy order relations.
منابع مشابه
Compositions de relations d'ordre sur des quantités graduelles et expression de requêtes flexibles
An issue in extending databases is to increase the expressiveness of query languages. Based on fuzzy set theory, flexible querying enables users to express preferences inside requirements. Quantifications and preferences on data have led us to define the notion of gradual integers (Nf). This framework has been extended to Zf and Qf, in order to dealing with queries based on difference or divisi...
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