3Kaiquan Shi.S -rough Sets and Application in Diagnosis-recognition for Disease[J].IEEE Proceedings of the First International Conference on Machine Learning and Cybemetics,2002,4(1):50-54.
4Kaiquan Shi,Ting-cheng Chang.One Direction S -rough Sets[J].International Journal of Fuzzy Mathematics,2003,11(2):525-543.
5Pawlak Z.Rough Sets[J].International Journal of International Sciences,1982,(11):341-356.
6Beaubouef T,Petry F E,Arora G.Information-Theoretic Measures of Uncertainty for Rough Relational Databases[J].Information Sciences,1998,109(1-4):185-195.
7Pawlak Z.Rough sets[J].International Journal of Information and Computer Science,1982,11 (5):341-356.
8Pawlak Z.Rough sets theory and its application to data analysis[J].Cybernetics and System,1998,9:661-668.
9Kryszkiewicz M.Rough set approach to incomplete information systems[J].Information Sciences,1998,112:39-49.
10Slowinskir R,Vsnderprooten D.A generalized definition of rough approximations based on similarity[J].IEEE Trans on Data and Knowledge Engineering,2000,12(2):331-336.
