摘要
主要对粗糙集中上下近似的矩阵刻画及应用进行了研究。给出等价关系、一般二元关系、基于邻域的覆盖粗糙集下一种上下近似的新的矩阵刻画;作为应用,提出关系矩阵方程,并对上下近似的逆问题进行了研究,即在已知关系矩阵MR上(下)近似(X)(-R(X))的情况下反解X给出了求解X的方法。
The matrix description and application of upper and lower approximation of rough set have studied in this paper. The new matrix descriptions of upper and lower approximation under equivalence relations, general binary and covering rough set based on the neighborhood are given. As an application, the inverse problems of upper and lower approximation have solved by using relationship matrix equation, that is, the method to solve X is given if the relationship matrix MR and the upper approximation Rˉ（X ）（or lower approximation-R（X ））have known.
出处
《计算机工程与应用》
CSCD
北大核心
2015年第20期107-110,152,共5页
Computer Engineering and Applications
基金
国家自然科学基金(No.60775038)
陕西省教育厅专项科研计划项目(No.12JK0878)
西安市科技计划项目(No.CXY1441(2))
关键词
粗糙集
上下近似
矩阵刻画
关系矩阵方程
rough set
upper and lower approximation
matrix description
relationship matrix equation
