计算机工程与应用2019，Vol.55Issue(17)：51-54,75,5.DOI:10.3778/j.issn.1002-8331.1805-0335
一种变精度约简转化为正区域约简的方法
Approach of Transforming Variable Precision Reduction into Positive Region Reduction
李旭 1李前辰1
作者信息
- 1. 北京语言大学 信息科学学院,北京 100083
- 折叠
摘要
Abstract
The positive region reduction and variable precision reduction for decision table are two important types of attribute reductions. By comparing the calculation process of the two discernibility matrices, under the condition that the variable precision threshold is greater than 0.5, the value of the decision attribute can be appropriately changed, so that the calculation of the variable precision reduction can be converted into the calculation of the positive region reduction. This paper shows that the calculation of any variable precision reduction can be transformed into that of a positive region reduction. This transformation can improve the efficiency of the variable precision reduction algorithm.关键词
变精度约简/正区域约简/辨析矩阵/决策表/粗糙集Key words
variable precision reduction/positive region reduction/discernibility matrix/decision table/rough set分类
信息技术与安全科学引用本文复制引用
李旭,李前辰..一种变精度约简转化为正区域约简的方法[J].计算机工程与应用,2019,55(17):51-54,75,5.
