Dòng Nội dung
1
Incrementally updating approximation. Incomplete information systems under the Variation of objects / Tran T T Huyen, Le Ba Dung, Nguyen Van Do..[and others] // Tạp chí Tin học và Điều khiển học = Journal of Computer Science And Cybernetics . - 2020. - tr. 70-84. - ISSN: 1813-9663



Ký hiệu phân loại (DDC): 006.6
In covering approximation space, the rough membership functions give numerical charac-terizations of covering-based rough set approximations. It is considered as a tool for establishing the relationship between covering-based rough sets and fuzzy covering-based rough sets. In this paper, we introduce a new method to update the approximation sets with rough membership functions in covering approximation space. Firstly, we present the third types of rough membership functions and study their properties. And then, we consider the change of them while simultaneously adding and removing objects in the information system. Based on that change, we propose a method for upda- ting the approximation sets when the objects vary over time. We proved that the method facilitates knowledge maintenance without retrain from scratch.
 Số bản sách: (0) Tài liệu số: (1)
2
Rough Picture Fuzzy Set And Picture Fuzzy Topologies / Nguyen Xuan Thao, Nguyen Van Dinh // Tạp chí Tin học và Điều khiển học = Journal of Computer Science And Cybernetics . - 2015. - P. 245-253. - ISSN:


9 p.
Ký hiệu phân loại (DDC): 621
Approximation of a picture fuzzy set on a crisp approximation space gives a roughpicture fuzzy set. In this paper, the concept of a rough picture set is introduced, besides we alsoinvestigate some topological structures of a rough picture fuzzy set are investigated, such are lowerand upper rough picture fuzzy approximation operators
 Số bản sách: (0) Tài liệu số: (1)