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。
关键词:
集值信息系统,
知识约简,
可辨识矩阵,
属性特征
Abstract: A new relation is defined in set-valued information 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.
Key words:
Set-valued information system,
Knowledge reduction,
Discernibility matrices,
Attributes characteristics
中图分类号:
宋笑雪;李鸿儒;张文修. 集值信息系统的知识约简与属性特征[J]. 计算机工程, 2006, 32(22): 26-27,3.
SONG Xiaoxue; LI Hongru; ZHANG Wenxiu. Knowledge Reduction and Attributes Characteristics in Set-valued Information System[J]. Computer Engineering, 2006, 32(22): 26-27,3.