DocumentCode
525309
Title
New operators in variable precision covering rough set
Author
Chen Dingjun
Author_Institution
Key Lab. of Numerical Simulation of Sichuan Province, Neijiang Normal Univ., Neijiang, China
Volume
2
fYear
2010
fDate
25-27 June 2010
Abstract
Both the β upper approximation and lower approximation operators in variable precision covering rough set model based on neighborhood do not keep intersection operation, which means that the information may be lost in the operations of intersection. A new pair of covering upper and lower boundary regions operators are defined in variable precision covering rough set and their properties are discussed. Using them, two inequalities well known in the variable precision covering rough set become equalities. With the change, no information will be lost in the new expressions.
Keywords
approximation theory; rough set theory; lower approximation operator; upper approximation operator; variable precision covering rough set; Educational institutions; Information science; Intelligent systems; Laboratories; Mathematical model; Mathematics; Numerical simulation; Process control; Set theory; Systematics; neighborhood; operator; precision covering rough set;
fLanguage
English
Publisher
ieee
Conference_Titel
Computer Design and Applications (ICCDA), 2010 International Conference on
Conference_Location
Qinhuangdao
Print_ISBN
978-1-4244-7164-5
Electronic_ISBN
978-1-4244-7164-5
Type
conf
DOI
10.1109/ICCDA.2010.5541171
Filename
5541171
Link To Document