Matrix redefinition of rough sets on double universes

Computer Engineering and Applications ›› 2007, Vol. 43 ›› Issue (25): 1-2.

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Matrix redefinition of rough sets on double universes

YANG Yong¹,LI Lian²

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

双论域上粗糙集的矩阵定义

杨勇¹,李廉²

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

通讯作者: 杨勇

Abstract

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

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

YANG Yong¹,LI Lian². Matrix redefinition of rough sets on double universes[J]. Computer Engineering and Applications, 2007, 43(25): 1-2.

杨勇¹,李廉². 双论域上粗糙集的矩阵定义[J]. 计算机工程与应用, 2007, 43(25): 1-2.

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Matrix redefinition of rough sets on double universes

双论域上粗糙集的矩阵定义

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