Préférences et quantités dans le cadre de l'interrogation flexible : sur la prise en compte d'expressions quantifiées

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. This approach applies to quantified statements of type “Q X are A” and “Q B X are A” and provides a new theoretical background for their interpretations.

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