变精度粗糙集模型与应用

Variable Precision Rough Set Model and its Application

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.