改进的对象间差异度的限制容差关系模型

摘要

不完备信息系统不能直接用经典的粗糙集理论来处理，为此，容差关系、非对称相似关系、限制容差关系、限制非对称相似关系、对象间差异度的限制非对称相似关系等扩充的粗糙集模型被相继提出。通过分析这些模型的优点和不足之处，定义了新的对象间差异度，提出了一种改进的对象间差异度的限制容差关系模型，实例结果表明基于所提出模型的划分更精确，更符合实际。%The classical rough set theory is not directly to deal with incomplete information system, therefore, the rough set model of tolerance relation, non-symmetric similarity relation, limited tolerance relation, limited non-symmetric similarity relation and limited non-symmetric similarity relation model based on object difference degree have been proposed. Through the analysis of the advantage and disadvantage of these models, the new definition of the degree difference between objects, it puts forward a new extension of rough set which is limited tolerance relation model based on degree of difference between objects, the results show that the proposed model more accurate, more practical.