Title :
VPRS based on similar relation in incomplete information system
Author :
Sun, Shibao ; Ding, AiPing ; Hu, Chengxiang
Author_Institution :
Nat. Lab. Of Software Dev. Environ., Beijing Univ. of Aeronaut. & Astronaut., Beijing, China
Abstract :
Through changing the equivalence relation to the similar relation in incomplete information system, a new variable precision rough set model and an approach for knowledge reduction are proposed. The basic properties of lower and upper approximation operators are also investigated. Finally, the example proves that the new variable precision rough set model can effectively reduct database, roundly wide application range of the VPRS, and fully maintain information for database in incomplete information system.
Keywords :
data mining; information systems; rough set theory; VPRS; incomplete information system; knowledge reduction; variable precision rough set model; Approximation methods; Biological system modeling; Computational modeling; Databases; Finite element methods; Information systems; Rough sets; incomplete information system; reduction; similar relation; variable precision rough set;
Conference_Titel :
Biomedical Engineering and Informatics (BMEI), 2010 3rd International Conference on
Conference_Location :
Yantai
Print_ISBN :
978-1-4244-6495-1
DOI :
10.1109/BMEI.2010.5639837
