Openings and closures of fuzzy preorderings: theoretical basics and applications to fuzzy rule-based systems

Ulrich Bodenhofer, Martine De Cock‡, Etienne E. Kerre
2003 International Journal of General Systems  
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.
doi:10.1080/0308107031000135026 fatcat:54dhbxddobfj7h4uhitviqhini