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首先,通过分析程度多粒度粗糙集和加权多粒度粗糙集的特点,针对不完备信息系统提出基于限制容差关系的加权程度多粒度粗糙集模型.然后提出一种粒度约简方法,建立粒度矩阵获得核粒度,并以粒度重要性作为启发式信息选择粒度,获得最终的约简集.最后,通过实例分析验证所提出的模型和粒度约简算法的有效性.
Firstly, a multi-granularity rough set model based on restricted tolerance relationship is proposed for incomplete information systems by analyzing the characteristics of multi-granularity rough sets and weighted multi-granular rough sets.Then a granular reduction method is proposed to establish a granularity matrix The kernel granularity is obtained, and the granularity is selected as the heuristic information to select the granularity, and the final reduction set is obtained.Finally, the effectiveness of the proposed model and granular reduction algorithm is verified by an example analysis.