定义了模糊粗糙集合理的补运算，从而利用公理化方法构造出推广了的粗糙集代数。
With the definition about reasonable complement operation of the fuzzy rough set, a expanded rough set algebra is constructed by using the method of formula.
在评价体系中引入代数学的集合概念和运算方法，能使评价体系更加全面、合理。
By introducing the conception and operation of Muster, the system of evaluation will be made more rational and comprehensive.
在评价体系中引入代数学的集合概念和运算方法，能使评价体系更加全面、合理。
By introducing the conception and operation of Muster, the system of evaluation will be made more rational and comprehensive.
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