The paper discusses the close-degree of rough fuzzy sets(RFS)and fuzzy rough sets(FRS),which is a measure of two RFS,two FRS close-level.Then it rescarchs interior product and outer product of RFS,FRS,introduces latti...The paper discusses the close-degree of rough fuzzy sets(RFS)and fuzzy rough sets(FRS),which is a measure of two RFS,two FRS close-level.Then it rescarchs interior product and outer product of RFS,FRS,introduces lattice-close-degree of RFS and FRS.On the base,we can get a new method of attribute reduction.展开更多
In order to evaluate the safety production situation of the coal mine effectively,selected the indicators about mine production safety, applied entropy method to determinethe objective weight of each index, calculated...In order to evaluate the safety production situation of the coal mine effectively,selected the indicators about mine production safety, applied entropy method to determinethe objective weight of each index, calculated the distance and close degree between themines and the ideal point and negative ideal point, and then evaluated the safety productionsituation of the mines according to the close degree.The results show that the methodprovides a reasonable, concise and more objective idea to evaluate the safety productionsituation of the mines.展开更多
基金Supported by the National Natural Science Foundation(69803007)
文摘The paper discusses the close-degree of rough fuzzy sets(RFS)and fuzzy rough sets(FRS),which is a measure of two RFS,two FRS close-level.Then it rescarchs interior product and outer product of RFS,FRS,introduces lattice-close-degree of RFS and FRS.On the base,we can get a new method of attribute reduction.
文摘In order to evaluate the safety production situation of the coal mine effectively,selected the indicators about mine production safety, applied entropy method to determinethe objective weight of each index, calculated the distance and close degree between themines and the ideal point and negative ideal point, and then evaluated the safety productionsituation of the mines according to the close degree.The results show that the methodprovides a reasonable, concise and more objective idea to evaluate the safety productionsituation of the mines.
