摘要
F-粗糙集是一种针对信息表簇或决策表簇的新的粗糙集模型.利用F-粗糙集模型中上、下近似的思想,定义了不确定性概念漂移的一些度量,包括概念的上、下近似漂移量和概念的上、下近似耦合度等,并初步探讨了它们的性质.
F-rough set model was regarded as a new rough set model for a family of information systems and decision systems. It was defined some measures of concept drift with the idea of upper approximation and lower approximation in F-rough sets. These measures included the measures for concept drift of upper approximation and lower approximation, the coincidence degrees for concept drift of upper approximation and lower approxi- mation etc. Moreover, some properties of these measures were investigated
出处
《浙江师范大学学报(自然科学版)》
CAS
2013年第3期303-308,共6页
Journal of Zhejiang Normal University:Natural Sciences
关键词
F-粗糙集
上近似
下近似
概念漂移
度量
F-rough sets
upper approximation
lower approximation
concept drift
measure