f-heredity knowledge and f-heredity mining

Using S-rough sets, this paper gives the concepts ƒ-heredity knowledge and its heredity coefficient, and f-variation coefficient of knowledge; presents the theorem of ƒ-attribute dependence of variation coefficient and the relation theorem of heredity-variation. The attribute dependence of ƒ-variation coefficient and the relation of heredity-variation are important characteristics of S-rough sets. From such discussion, this paper puts forward the heredity mining ƒ-knowledge and the algorithm of heredity mining, also gives its relative application.