10th IEEE International Conference on Fuzzy Systems, Melbourne, Australia, 2 - 05 December 2001, vol.1, pp.416-419, (Full Text)
In this paper we introduce a new method to describe a relationship between two parameters, based on the notion of a fuzzy derivative. This definition is quite different from the same notions used in the literature, where fuzzy derivatives are defined via a reformulation of the notion of derivative in classic mathematics. In this work this notation appears as a mathematical tool for describing a relationship between parameters. The main idea is to describe the influence of the change of one parameter on another. In our point of view this is more natural development of the fuzzy set idea introduced by L.Zadeh. Suggested method is mainly directed to study systems with qualitative features, but it also can be used for systems with quantitative features. Proposed method is applied for classification in the liver-disorder database.