摘要： 针对带缺省属性值的不完备信息系统，对已提出的容差关系、非对称相似关系、限制容差关系和修正容差关系等相似关系的局限性进行了剖析，提出了一种权衡容差关系，实例和分析说明，它是一种更加合理的带缺省属性值的不完备信息系统的相似关系。
关键词:
不完备信息系统,
相似关系,
限制容差关系,
权衡容差关系
Abstract:
Under incomplete information system with default value, there are several similarity relations, such as tolerance relations, dissymmetrical similarity relation, limited tolerance relation and modified tolerance relation. But they have their own limitations. In this paper, balanced tolerance relation is presented. And it is verified that the balanced tolerance relation is more reasonable and effective.
Key words:
Incomplete information system,
Similarity relation,
Limited tolerance relation,
Balanced tolerance relation
中图分类号:
张桂芸;樊广佺;杨炳儒. 带缺省属性值的不完备信息系统相似关系改进[J]. 计算机工程, 2007, 33(09): 74-75,7.
ZHANG Guiyun; FAN Guangquan; YANG Bingru. Improvement of Similarity Relation Under Incomplete Information System with Default Value[J]. Computer Engineering, 2007, 33(09): 74-75,7.