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计算机工程 ›› 2006, Vol. 32 ›› Issue (10): 43-44,65.

• 软件技术与数据库 • 上一篇    下一篇

基于分辨相似矩阵的相似粗糙集的属性约简算法

张桂芸1,2,黄国兴3,杨炳儒1   

  1. 1. 北京科技大学信息工程学院,北京100083;2. 天津师范大学计算机与信息工程学院,天津300384;3. 华东师范大学软件学院,上海200062
  • 出版日期:2006-05-20 发布日期:2006-05-20

Attribute Reduction Algorithm Based on Discernable and Similar Matrix About Similar Rough Set

ZHANG Guiyun1,2, HUANG Guoxing3, YANG Bingru1   

  1. 1. Information Engineering College, Beijing University of Science and Technology, Beijing100083; 2. Computer and Information Engineering College, Tianjin Normal University, Tianjin 300384; 3. Software Engineering Institute, East China Normal University, Shanghai 200062
  • Online:2006-05-20 Published:2006-05-20

摘要: 针对现实中数据局限导致等价关系弱化为相似关系,用相似关系代替等价关系建立了相似粗糙集的理论,定义了新的分辨相似矩阵,并给出了基于分辨相似矩阵的求核和属性约简算法,该算法可以有效地减少属性约简的计算量,最后通过实例验证了该算法是适用和有效的。

关键词: 相似关系;相似粗糙集;分辨相似矩阵;属性约简

Abstract: For weakening equivalent relation to similar relation in information system, the similar rough set by similar relation, the concept of discernible and similar matrix are defined in the similar information systems. And based on it, the algorithm of attribute reduction and core in similar RS theory is given. Finally, some examples are shown that the minimal reduction of similar information systems can be obtained by using the algorithm simply.

Key words: Similar relation; Similar rough set; Discernable and similar matrix; Attribute reduction