DocumentCode
3430502
Title
Rough set over dual-universes in general incomplete information system
Author
Yan, Ruixia ; Wu, Zhong
Author_Institution
School of Management, Shanghai University of Engineering Science, 201620, China
fYear
2012
fDate
11-13 Aug. 2012
Firstpage
779
Lastpage
782
Abstract
For the universality of incomplete information and superiority of rough set over dual-universes, we research rough set over dual-universes in incomplete information system. In this paper, we provide a general character function in incomplete information system. Then lower and upper approximation operators of rough set over dual-universes in incomplete information system are constructed utilizing general character function. Basic properties of rough set over dual-universes in incomplete information system are studied. Relations between rough set over dual-universes rough set over dual-universes in incomplete information system are discussed. Also, some numerical examples are presented to illustrate theses concepts.
Keywords
Approximation methods; Educational institutions; Information systems; character function; incomplete information system; rough set; rough set over dual-universes;
fLanguage
English
Publisher
ieee
Conference_Titel
Granular Computing (GrC), 2012 IEEE International Conference on
Conference_Location
Hangzhou, China
Print_ISBN
978-1-4673-2310-9
Type
conf
DOI
10.1109/GrC.2012.6468573
Filename
6468573
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