supported by the National Natural Science Foundation of China (60364001,70461001);the Hainan Provincial Natural Science Foundation of China (807054);Hainan Provincial Education Office Foundation (HJ 2008-56)
Singular rough sets (S-rough sets) have three classes of forms: one-directional S-rough sets, dual of onedirectional S-rough sets, and two-directional S-rough sets. Dynamic, hereditary, mnemonic, and hiding propert...
the National Natural Science Foundation of China (60364001, 70461001);Hainan ProvincialNatural Science Foundation of China (80401).
A new method for translating a fuzzy rough set to a fuzzy set is introduced and the fuzzy approximation of a fuzzy rough set is given. The properties of the fuzzy approximation of a fuzzy rough set are studied and a f...