【摘要】 对粗糙集理论的基本概念和相关定理进行了研究,针对目前常用的属性频度约简算法的缺陷,提出了一种改进算法;通过实例对改进算法的有效性进行了分析和验证。更多还原

【Abstract】 The basic concepts and the relating theorem were studied in this paper.Knowledge reduction is one of the most important contents of rough set theory.The attribute reduction algorithm based on the frequency of attributes used the degree of the attributes appear in the discernibility matrix as the heuristic information of attributes selection.According to the limitation of this algorithm,an improved algorithm was presented.Finally the validity of the improved algorithm was analyzed and demonstrated by the example.更多还原