New algorithm of backward cloud based on normal interval number
Shaowei Yu · Systems Engineering - Theory & Practice · 2011
Cloud model is an effective tool in uncertain transforming between qualitative concepts and their quantitative expressions.Backward cloud generator can transform quantitative values into qualitative concepts.In this paper,a new algorithm of backward cloud was given after deeply analyzing the traditional algorithms of backward cloud and in the inspiration of the idea that all fuzzy membership functions could form a curve cluster which could be regarded as an approximation to a cloud.Differently from the traditional algorithms,the new algorithm can process interval numbers and avoid repeated calculation in the process of parameter requested.The experimental analysis results show that this algorithm can get numerical characteristic values of cloud in high precision and has high practicality.