In 1990, Dubois pointed out that these two theories are different mathematical methods in handling two uncertainty(ambiguity and rough) ,and he put forward two kinds of mathematical model of fuzzy rough set and rough fuzzy set.
英
美
- 1990年,Dubois等指出兩種理論是處理兩種不確定性(模糊性和粗糙性)的不同的數學(xué)方法,并提出了模糊粗糙集和粗糙模糊集的數學(xué)模型。