摘要
在序信息系统中引入了优势矩阵和目标分布矩阵的概念,建立了此类信息系统中分布约简的矩阵算法,同时通过实例分析验证了该算法的有效性,其优点是对数据复杂的信息表可相对容易地给出所有的分配约简,为序信息系统分配约简提供了一种便捷操作的属性约简方法.
This paper studies the problem of matrix computation for distribution reduction in ordered information systems. The dominance matrix and decision distribution matrix are introduced in ordered information systems. Furthermore, the algorithm of distribution reduction is obtained, from which we can provide new approach to attributes reductions in inconsistent ordered information systems. Finally, an example illustrates the validity of this method and shows that the method is applicable to a complex information system.
出处
《重庆理工大学学报（自然科学）》
CAS
2010年第3期56-61,共6页
Journal of Chongqing University of Technology：Natural Science
基金
重庆市教委科学技术研究项目(KJ090612)
关键词
粗糙集
信息系统
分布约简
矩阵计算
rough set
information system
distribution reduction
matrix computation
