关键词: 变精度粗糙集模型 近似算子 二元关系 后继邻域

Abstract: The majority inclusion relation is defined. A generalized variable precision rough set model based on successor neighbor is proposed by means of the error parameter β（0≤β〈0. 5）. β upper approximation aprβX ,β lower approximation aprβX ,β, boundary region

Key words: Variable precision rough set model, Approximation operators, Binary relation, Successor neighbor