摘要
针对交可约粒度空间中覆盖、基和粒结构的关系,结合偏序关系的哈斯图,给出一种约简粒度空间的方法.另外,通过限定上、下近似算子的取值范围,重新定义了交可约粒度空间上的粗糙集模型,并讨论了其相关性质.
In terms of the relationship among the covering, the basis, and the corresponding granular structure, a new method is given for reduce the granular spaces, by using the hasse diagram based on partial order relation. In addition, by limiting the domain of rough approximation operators, a rough set model is redefined, and the natural of rough set model is examined also on the union reducible granular snaces.
出处
《数学的实践与认识》
CSCD
北大核心
2013年第12期258-263,共6页
Mathematics in Practice and Theory
基金
宁夏自然科学科研基金(NZ08113)
宁夏留学回国人员创新项目(NR201259707)
宁夏高校科研基金(NJ201279)
宁夏师范学院科研基金(Z070011)
关键词
粒度空间
覆盖
约简
粗糙集模型
Granular Spaces
covering
reduction
rough set model
