【摘要】 分析文献[5]提出的针对不完备信息系统的粗糙集分层递阶约简方法,对其进行一定的改进,使算法的效率提高,计算量减少.属性重要性的使用使算法更适用于实际问题.更多还原

【Abstract】 First, in this paper, we analyze the recursive method based on layers in reference[5] for reducing and extracting rules from an incomplete information system in the context of rough set. Then, we improve the algorithm on its computational effort and efficiency. The use of attribute significance makes the proposed algorithm more applicable to actual problems.更多还原