摘要
不对称边界的变精度粗糙集是Pawlak粗糙集、变精度粗糙集的推广,在l和u参数作用下,使粗糙集模型更加一般化,完善了近似空间的概念。基于不对称变精度粗糙集模型研究的基础上,提出了分类质量和依赖度的方法对不精确信息进行度量,对决策表进行约简。在l,u值的选取,提出了单参数控制的方法,通过l,u-质量图分析和计算验证了方法的有效性。
The variable precision rough set ( VPRS ) with asymmetric bounds is a development of the Pawlak rough set theory and variable precision rough set. Under l and u values, it made the rough set generalization and consummates approximation spatial concepts. In order to reduce a decision table, the method of quality of classification and degree of dependency were proposed to measure uncertain information based on variable precision rough set model with asymmetric bound. The single parameter control method was proposed to select l and u values. It is available by computing and analyzing with l,u-quality graph.
出处
《系统仿真学报》
EI
CAS
CSCD
北大核心
2006年第12期3472-3474,共3页
Journal of System Simulation
基金
国家自然科学基金(60274024
60474040)
关键词
不对称边界的变精度粗糙集
分类质量
依赖度
单参数控制
l
u-质量图
VPRS with Asymmetric Bound
Quality of Classification (QoC)
Degree of Dependency (DoD)
Single Parameter Control
l,u -Quality Graph