作　　者： ; ; ;

机构地区： 黑龙江科技学院计算机与信息工程学院

出　　处： 《佳木斯大学学报（自然科学版）》 2009年第2期195-197,共3页

摘　　要： 介绍了粗糙集的概念和约简的相关定义,提出了基于粗糙依赖的属性约简算法.通过差别矩阵求核,并计算非核属性粗糙依赖值,从而确定相对属性约简.以远程教学网络课程等级评价为例进行算法验证,并通过基于值核的值约简算法提取决策规则,实践证明得到了满意的结果. This concept of rough sets and definitions of reduction were introduced. A reduction algorithm based on rough dependency was proposed. The core was gained by the discemable matrix, and rough dependency of non - core attribute was calculated in order to get the relative attribute reduction. It＇ s verified through the example of remote education network course degree estimation. And the decision rules through value reduction based on value core were extracted. The result is satisfactory.

关 键 词： 粗糙集 粗糙依赖 约简 课程评价

领　　域： [自动化与计算机技术] [自动化与计算机技术]