计算机工程与应用 ›› 2009, Vol. 45 ›› Issue (2): 140-143.DOI: 10.3778/j.issn.1002-8331.2009.02.041

• 数据库、信号与信息处理 • 上一篇    下一篇

粗糙Vague集(值)间k步相似度量新方法

张阿红1,王治和1,杜 鹏1,吴 鹏1,2   

  1. 1.西北师范大学 数学与信息科学学院,兰州 730070
    2.浙江林学院 信息工程学院,浙江 临安 311300
  • 收稿日期:2007-12-29 修回日期:2008-03-03 出版日期:2009-01-11 发布日期:2009-01-11
  • 通讯作者: 张阿红

New method of similarity measures for k steps between rough Vague sets(valued)

ZHANG A-hong1,WANG Zhi-he1,DU Peng1,WU Peng1,2   

  1. 1.College of Mathematics and Information Science,Northeast Normal University,Lanzhou 730070,China
    2.School of Information Engineering,Zhejiang Forestry College,Lin’an,Zhejiang 311300,China
  • Received:2007-12-29 Revised:2008-03-03 Online:2009-01-11 Published:2009-01-11
  • Contact: ZHANG A-hong

摘要: 对粗糙集、Vague集及粗糙Vague集的概念、知识表示方法进行了讨论,描述了粗糙Vague集的相关概念,在研究了粗糙Vague集相似性度量方法的基础上,提出了一种对踌躇度пvxk步细化的k步相似度量新方法,并且研究了该方法的相关性质。进一步对k步相似度量在k趋向无穷时求极限,得出粗糙Vague集退化为模糊集的特例情况。

关键词: 粗糙集, Vague集, 粗糙Vague集, 踌躇度пvx), k步相似度量

Abstract: In this paper,some concepts of rough sets,vague sets and rough Vague sets are discussed,and the method of knowledge expression is approached.The concept of rough vague-valued and similarity measures for measuring the degree of similarity between elements(rough vague-valued:RV-valued) are studied,and then a new method of similarity measures for k steps between rough Vague sets(valued) is given,its some properties are studied.Similarity measures for k steps are limited while k tends to infinity,then rough Vague sets becomes fuzzy sets.

Key words: rough sets, vague sets, rough vague sets, hesitate degrees пvx), similarity measure of k steps