摘要
提出划分矩阵和布尔列向量取小乘法的概念;证明了下矩阵和上矩阵的行并向量分别是下近似和上近似;研究了上下近似的性质;给出了计算上下近似的算法。
The concept of min-product between partition matrix and Boolean column vector is presented.The results that row-union vector of lower matrix is lower approximation and row-union vector of upper matrix is upper approximation are proved.Some properties of upper and lower approximations are studied.Finally,an algorithm to computer upper anti lower approximations is established.
出处
《计算机工程与应用》
CSCD
北大核心
2008年第6期48-50,共3页
Computer Engineering and Applications
基金
国家自然科学基金(the National Natural Science Foundation of Chinaunder Grant No.10671158)
甘肃省教育厅高校科研项目(0701-16)
西北师范大学重点学科网络计算。
关键词
粗糙集
取小乘法
上下矩阵
行并向量
rough sets
rain-product
upper and lower matrixes
row-union vector
