北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2015, Vol. 38 ›› Issue (5): 28-32,41.doi: 10.13190/j.jbupt.2015.05.004

• 论文 • 上一篇    下一篇

广义相关性基础上的量化容差关系的改进

刘城霞1,2, 何华灿1   

  1. 1. 北京邮电大学 计算机学院, 北京 100876;
    2. 北京信息科技大学 计算机学院, 北京 100101
  • 收稿日期:2015-03-20 出版日期:2015-10-28 发布日期:2015-10-28
  • 作者简介:刘城霞(1978—),女,博士生,E-mail:cecilia7812@163.com;何华灿(1938—),男,教授,博士生导师.
  • 基金资助:

    北京市属高等学校创新团队建设与教师职业发展计划项目(IDHT20130519)

An Improvement on the Valued Tolerance Relation Based on the Generalized Correlativity

LIU Cheng-xia1,2, HE Hua-can1   

  1. 1. School of Computer Science, Beijing University of Posts and Telecommunications, Beijing 100876, China;
    2. School of Computer Science, Beijing Information and Technology University, Beijing 100101, China
  • Received:2015-03-20 Online:2015-10-28 Published:2015-10-28

摘要:

为了更好地处理不完备信息系统,对改进粗糙集模型中的容差关系和量化容差关系进行了分析,提出了一种新的量化容差关系.新量化容差关系从已知属性和未知属性关联的角度,考虑不同属性取值之间的相吸性和相斥性,结合泛逻辑中的广义相关系数,定义属性间的广义相关因子,在新量化容差相似度计算中使用该广义相关因子参与计算,并给出了具体的计算方法,证明了新的量化容差关系的基本性质. 最后通过实例对该量化容差关系进行了验证.

关键词: 粗糙集, 泛逻辑, 不完备信息系统, 量化容差关系

Abstract:

To get better effect in the processing of incomplete information system the tolerance relation and the valued tolerance relation in the extension rough set model was studied and a new valued method was proposed. The new valued tolerance relation is affected by correlation between the known attributes and the unknown attributes. The correlation and repellency between the different objects' attributes values were considered and the general correlation factor was defined based on the generalized correlativity in universal logic. The new valued tolerance similarity between the individual objects is related to this factor and a particular computing method is given. The characters of the new valued tolerance relation were proved reasonably and an instance was given to illustrate its usage at last.

Key words: rough set, universal logic, incomplete information system, valued tolerance relation

中图分类号: