计算机工程与应用 ›› 2009, Vol. 45 ›› Issue (6): 158-160.DOI: 10.3778/j.issn.1002-8331.2009.06.044

• 数据库、信号与信息处理 • 上一篇    下一篇

不完备信息系统下非对称相似关系的改进

赵亚鹏,丁以中   

  1. 上海海事大学 交通运输学院,上海 200135
  • 收稿日期:2008-01-14 修回日期:2008-03-31 出版日期:2009-02-21 发布日期:2009-02-21
  • 通讯作者: 赵亚鹏

Improvement of nonsymmetrical similarity relation under incomplete information system

ZHAO Ya-peng,DING Yi-zhong

  

  1. College of Transport & Communications,Shanghai Maritime University,Shanghai 200135,China
  • Received:2008-01-14 Revised:2008-03-31 Online:2009-02-21 Published:2009-02-21
  • Contact: ZHAO Ya-peng

摘要: 通过分析现有粗糙集扩充模型,提出了一种修正非对称相似关系。基于该关系的扩充模型有效地克服了容差关系和非对称相似关系的不足。实例结果表明了其对不完备信息系统处理更简单有效,获取的信息更充分。

Abstract: Through the analysis of existing extension models of rough set,an amended unsymmetrical similarity relation is presented.The extension model effectively overcomes the disadvantage of tolerance relation and non-symmetrical similarity relation.The experiment proves that it is more simple and effective for the incomplete information system,and get more information.