Openings and closures of fuzzy preorderings: theoretical basics and applications to fuzzy rule-based systems
Ulrich Bodenhofer, Martine De Cock, Etienne Kerre · International Journal of General Systems · 2003
The purpose of this paper is two-fold. Firstly, a general concept of closedness of fuzzy sets under fuzzy preorderings is proposed and investigated along with the corresponding opening and closure operators. Secondly, the practical impact of this notion is demonstrated by applying it to the analysis of ordering-based modifiers.