Open AccessThe New Type of Reducts in Intuitionistic Fuzzy β-covering Approximation Spaces
Author(s) -
Zaibin Chang,
Wei Jun-chao,
Xuezhen Dai
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1684/1/012055
Subject(s) - reduct , mathematics , type (biology) , space (punctuation) , pure mathematics , discrete mathematics , rough set , data mining , computer science , ecology , biology , operating system
A type of reducts in intuitionistic fuzzy (IF) β-coverings has been presented based on the union operation. But for some problems, there is no reducts in IF β-coverings according to this definition. That is to say, this notion has its boundedness. Therefore, we present the new type of reducts in IF β-coverings in this paper, and we call it type-2 reduct. Moreover, the type-2 reducts in IF β -covering approximation spaces are investigated while adding and removing some objects of the universe. Firstly, the notion of the type-2 reduct in an IF β -covering approximation space is presented. Then, some properties of type-2 reducts of IF β -coverings are investigated while adding and removing some objects.