信息系统中属性重要性的等价刻画

Equivalent Charactertions of the Importance of Attributes in Information Systems

信息系统是一个具有对象与属性关系的数据库,揭示属性的本质特点、刻画属性的重要性是考虑各类约简问题的基础.本文改进了已有的基于等价关系的属性重要性的度量,并给出了基于划分的属性重要性的刻画,在一定程度上简化了相关运算步骤,提高了运算效率.

Information system is a databases have relations between object and property.It is the basis of all kinds of reduction to uncover the essence property of attributes and portray the importance of it.This paper improved the importance measure of attributes based on the equivalence relation,and the equivalent charactertions of it based on the partition was provided,which will simplify the operation steps and improve the computing efficiency.