摘要
定义了集值信息系统中的一种新的关系,讨论了在这种关系下集值信息系统的知识约简问题,给出了集值信息系统属性约简的判定定理和辨识矩阵,得到了计算约简的具体方法;讨论了集值信息系统中3种不同类型的属性特征及每一种属性的判定定理。
A new relation is defined in set-valued informalion system, based on the relation the problem of knowledge reduction in set-valued information system is discussed, the ,judgment theorems and the discernibility matrices of knowledge reduction are then given in set-valued information system, from which a new approach to knowledge reductions can be provided. The characteristics of different type of attributes in set-valued information system are studied, and the judgment theorems about them are obtained.
出处
《计算机工程》
EI
CAS
CSCD
北大核心
2006年第22期26-27,36,共3页
Computer Engineering
基金
国家"973"计划基金资助项目(2002CB312200)
咸阳师范学院专项科研基金资助项目(04XSYK225)
关键词
集值信息系统
知识约简
可辨识矩阵
属性特征
Set-valued information system
Knowledge reduction： Discernibility matrices
Attributes characteristics
