Computer Engineering and Applications ›› 2011, Vol. 47 ›› Issue (35): 22-24.

• 博士论坛 • Previous Articles     Next Articles

Extended rough set model in set-valued information systems

BAO Zhongkui1,2,YANG Shanlin1   

  1. 1.School of Management,Hefei University of Technology,Hefei 230009,China
    2.School of Mathematical Sciences,Anhui University,Hefei 230601,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-12-11 Published:2011-12-11

集值信息系统的粗糙集扩展模型

鲍忠奎1,2,杨善林1   

  1. 1.合肥工业大学 管理学院,合肥 230009
    2.安徽大学 数学科学学院,合肥 230601

Abstract: Kinds of relations in the classical set-valued information systems are analyzed.Based on set inclusion degree,the concept of tolerance degree is introduced in set-valued information systems,and then a tolerance relation based on tolerance degree is defined.An extension model of rough set based on α-tolerance relation is proposed,then the relations between this extension model and classical models are compared.Finally,an illustrative example is analyzed.

Key words: set-valued information systems, rough set, tolerance degree, α-tolerance relation

摘要: 通过分析研究现有集值信息系统下定义的二元关系,基于集合包含度在集值信息系统中引入相似度概念,定义了一种基于相似度的α-相容关系,提出基于α-相容关系的粗糙集扩展模型,并分析比较了该模型与现有粗糙集扩展模型之间的关系。最后,给出实例加以验证。

关键词: 集值信息系统, 粗糙集, 相似度, α-相容关系