【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.更多还原

【Abstract】 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 approximation etc.Moreover,some properties of these measures were investigated.更多还原