摘要
针对K等价度容差关系,提出了一种基于K等价度容差关系的变精度粗糙集模型,该模型是变精度粗糙集模型在不完备信息系统中的拓展。给出了K等价度容差关系下变精度粗糙集模型的上近似、下近似、和负域的定义以及近似质量和粗糙测度定义,并详细地讨论了上下近似算子的性质。最后,实例分析该模型在信息处理中应用的有效性。
Variable precision rough set model based on k-equivalent degree tolerance relation is proposed in this paper, and it is a spread that variable precision rough set model in incomplete information system. Its upper and down approximation, negative domain, approximation quality and rough measure are defined, and its properties of upper and down approximation is discussed detailedly. Finally, a real example analysis this model the validity of the application in the information processing.
关键词
粗糙集理论
不完备信息系统
K等价度容差关系
rough set theory
incomplete information system
k-equivalent Degree Tolerance Relation
