广义相关性基础上的量化容差关系的改进  

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

作　　者：刘城霞[1,2] 何华灿[1] 

机构地区：[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

出　　处：《北京邮电大学学报》2015年第5期28-32,41,共6页Journal of Beijing University of Posts and Telecommunications

基　　金：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)

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.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.

关 键 词：粗糙集 泛逻辑 不完备信息系统 量化容差关系 

分 类 号：TN301.6[电子电信—物理电子学]