计算机工程与应用 ›› 2007, Vol. 43 ›› Issue (25): 1-2.

• 博士论坛 • 上一篇    下一篇

双论域上粗糙集的矩阵定义

杨 勇1,李 廉2   

  1. 1.西北师范大学 数学与信息科学学院,兰州 730070
    2.兰州大学 信息科学与工程学院,兰州 730000
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-09-01 发布日期:2007-09-01
  • 通讯作者: 杨 勇

Matrix redefinition of rough sets on double universes

YANG Yong1,LI Lian2   

  1. 1.College of Mathematics and Information Science,Northwest Normal University,Lanzhou 730070,China
    2.School of Information Science and Engineering,Lanzhou University,Lanzhou 730000,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-09-01 Published:2007-09-01
  • Contact: YANG Yong

摘要: 提出了两个关系矩阵的序偶取小乘法的概念,并利用关系矩阵和布尔列向量重量上乘法和下乘法的有关结论,给出了计算双论域上任一集合上下近似的具体算法,从而使得双论域上粗糙集的计算程序化。

关键词: 粗糙集, 重量乘法, 重量上乘法, 重量下乘法, 序偶取小乘法

Abstract: Concept of ordered pair-minimum product of two relation matrixes has been presented,and using related results of weight upper product and weight lower product,a concrete algorithm to compute upper and lower approximations of a subset on double universes has been established.

Key words: rough set, weight product, upper product, lower product, ordered pair-minimum product