变精度粗糙集模型与应用  

Variable Precision Rough Set Model and its Application

作　　者：张国荣[1] 王治和[1] 周涛[1] 

机构地区：[1]西北师范大学数学与信息科学学院,甘肃兰州730070

出　　处：《太原师范学院学报（自然科学版）》2010年第4期14-17,共4页Journal of Taiyuan Normal University:Natural Science Edition

摘　　要：介绍了Ziarko变精度粗糙集模型、β约简和广义变精度粗糙集模型;讨论了广义变精度粗糙集模型β上、下近似算子的基本性质,分析了该模型与Ziarko变精度粗糙集模型之间的关系,最后用实例分析了β约简过程.This paper introduces Ziarko′s variable precision rough set model,β reducts and generalized variable precision rough set model.The basic properties of β upper approximation operators and β lower approximation operators in generalized variable precision rough set model are discussed.The relationship between generalized variable precision rough set model and Ziarko＇s variable precision rough set model are investigated.Finally,the examples analyse the proceeding of β reducts.

关 键 词：变精度粗糙集模型 β约简 广义变精度粗糙集模型 

分 类 号：TP18[自动化与计算机技术—控制理论与控制工程]