模糊关系数据库中的非对称冗余元组  

Asymmetric Redundancy of Tuples in Fuzzy Relational Database

作　　者：杨宁[1] 杨种学[1] 田丰春[1] 

机构地区：[1]南京晓庄学院数学与信息技术学院,江苏南京210017

出　　处：《计算机工程与科学》2011年第3期163-166,共4页Computer Engineering & Science

摘　　要：在现实世界中,有些对象比其它的更具有一般性,两个对象的相似度可能不对称。两个对象之间的相似关系可能既不对称又不传递,我们用弱相似关系来表示。本文提出了非对称冗余元组来处理模糊关系数据库中的弱相似关系。非对称冗余元组的概念是模糊关系数据库的冗余概念的推广,它用来删除一些冗余信息,表示更精确的信息。In the real world, some objects have more general meaning than the others, the degrees of similarity of two objects may not be symmetric. The relation of similarity between two objects may neither necessarily be symmetric nor transitive, we represent it by a weak similarity relation. This paper puts forward the asymmetric redundancy of tuples in a fuzzy relational database dealing with weak fuzzy similarity relations, the concept of asymmetric redundancy of tuples is the expansion of the concept of redundancy in the fuzzy relational database. It is used to delete some redundancy information, and represent more accurate information.

关 键 词：模糊关系数据库 非对称冗余元组 弱相似关系 相似关系 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]