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模糊相似关系下的模糊粗糙集
Fuzzy Rough Sets Based on Fuzzy Similar Relation
【摘要】 在模糊粗糙集模型中引入模糊相似关系,定义了一组上、下近似集,并讨论了模糊相似关系下的模糊粗糙集的一些性质,得出了它在模糊相似关系的包含运算、并运算、交运算、合成运算及闭包运算下的一些结论.最后定义了模糊粗糙集在模糊相似关系下的粗糙度和近似精度,并得出了一些结果.
【Abstract】 In the paper,fuzzy rough sets based on fuzzy similar relation is first introduced,and their and lower approximation sets are defined.Some properties of fuzzy rough sets based on fuzzy similar relation are discussed and deduced some results under all kinds of relation operations.Finally,a coarseness degree and an approximation accuracy of fuzzy rogh sets based on fuzzy similar relation,are defined and got some resultses.
【关键词】 模糊相似关系;
模糊粗糙集;
粗糙度;
近似精度;
关系运算;
【Key words】 fuzzy similar relation; fuzzy rough sets; coarseness degree; aproximation acuracy; relation operation;
【Key words】 fuzzy similar relation; fuzzy rough sets; coarseness degree; aproximation acuracy; relation operation;
- 【文献出处】 辽宁师范大学学报(自然科学版) ,Journal of Liaoning Normal University(Natural Science Edition) , 编辑部邮箱 ,2006年03期
- 【分类号】O159
- 【被引频次】7
- 【下载频次】241