【摘要】 通过对Rough集中的不分明关系的研究,提出了不分明关系的上、下近似相等和上、下近似距离等新概念,并对它们的性质作了初步的研究。更多还原

【Abstract】 This paper proposes the new notions,namely,upper approximate equality,lower approximate equality,of mdiscernibility relation are defined by studying mdiscernibility,in Rough sets.Also which study upper opproximate distance and lower approximate distance between different indiscernibility relations in the paper the properties of them have been also studied preliminarily.更多还原