计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (13): 25-29.

• 研究、探讨 • 上一篇    下一篇

不完备区间值模糊信息系统的粗糙集理论

巩增泰,陶 蕾   

  1. 西北师范大学 数学与信息科学学院,兰州 730070
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-05-01 发布日期:2011-05-01

Rough set theory for incomplete interval-valued fuzzy information systems

GONG Zengtai,TAO Lei   

  1. College of Mathematics and Information Science,Northwest Normal University,Lanzhou 730070,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-05-01 Published:2011-05-01

摘要: 考虑到模糊信息系统的不完备性和信息值的不确定性,讨论了不完备区间值模糊信息系统的粗糙集理论,给出了粗糙近似算子的性质。研究了不完备区间值模糊信息系统上的知识发现,提出了基于不完备区间值决策表的决策规则和属性约简,最后给出算例。

关键词: 区间值模糊集, 区间值模糊信息系统, 不完备信息系统

Abstract: By considering the incompleteness and uncertainty of information systems,the rough set theory for the incomplete interval-valued fuzzy information systems is discussed,and several properties of the rough approximation operators are showed.In addition,the knowledge discovery for the incomplete interval-valued fuzzy information systems is studied.As an application,the decision rule and the attribute reduction are presented based on an incomplete interval-valued decision table.

Key words: interval-valued fuzzy set, interval-valued fuzzy information system, incomplete information system