计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (35): 122-124.

• 数据库、信号与信息处理 • 上一篇    下一篇

优势关系下的区间值信息系统及其属性约简

于莹莹,曾雪兰,孙兴星   

  1. 广西大学 数学与信息科学学院,南宁 530004
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-12-11 发布日期:2011-12-11

Interval-valued information system based on dominance relation and its attribute reduction

YU Yingying,ZENG Xuelan,SUN Xingxing   

  1. College of Mathematics and Information Science,Guangxi University,Nanning 530004,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-12-11 Published:2011-12-11

摘要: 针对区间值信息系统,提出一种新的优势关系,并定义了基于这种优势关系的信息系统的上、下近似集。通过可辨识矩阵的方法,提出了区间值信息系统的属性约简方法。通过实例验证该属性约简方法简便易行。

关键词: 粗糙集, 区间值信息系统, 优势关系

Abstract: Aiming at interval-valued information system,a new dominance relation is presented,then upper and low approximation sets of this system are constructed which are based on this dominance relation.Attribute reduction of interval-valued information system is displayed with discernibility matrix.An example illustrates that this method is simple and easy.

Key words: rough set, interval-valued information system, dominance relation