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在融入一定程度误差的分类思想下,在多粒度粗糙集模型基础上,对不完备信息系统,提出基于限制容差关系的程度多粒度粗糙集,包括程度乐观多粒度粗糙集和程度悲观多粒度粗糙集.通过分析程度乐观多粒度粗糙集和程度悲观多粒度粗糙集的不足之处,提出一种可变程度多粒度粗糙集模型.研究可变程度多粒度粗糙集、程度乐观多粒度和程度悲观多粒度粗糙集的性质.可变程度多粒度粗糙集在一定程度上提高了精度,使分类更加有效,实例分析的结果也验证了该理论的可行性.
Based on multi-granularity rough set model and multi-granularity rough set model, a multi-granularity rough set based on restricted tolerance relationship is proposed based on multi-granular rough set model, including degree of optimistic multi-granularity rough set and degree of pessimistic multi-granularity Rough set.This paper presents a variable degree of multi-granularity rough set model by analyzing the degree of optimism of multi-level rough set and pessimistic multi-level rough set.The research of variable degree of multi-granularity rough set, the degree of optimistic multi-granularity and degree The pessimistic nature of multi-granularity rough set.Variable degree of multi-granularity rough set to a certain extent, improve the accuracy of the classification more effective, the results of case analysis also verify the feasibility of the theory.