关键词: 粗糙集理论 粗糙几何 上近似变换 几何不变性 手写数字识别

Abstract: Rough geometry is the result from applying the rough set theory to the traditional geometry. In the new theory, the geometric configuration can be constructed by its upper approximation at different levels of granularity. This paper focuses on the introdu

Key words: Rough set theory, Rough geometry, Upper approximation, Geometric fixity, Handwritten digit recognition