Hybrid: a new multigranulation rough set approach

Authors:
Xibei Yang;Cheng Yan;Cai Chen;Jingyu Yang
Affiliations:
School of Computer Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, P.R. China,School of Computer Science and Technology, Nanjing University of Science an ...;School of Computer Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, P.R. China;School of Computer Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, P.R. China;School of Computer Science and Technology, Nanjing University of Science and Technology, Nanjing, Jiangsu, P.R. China
Venue:
RSKT'12 Proceedings of the 7th international conference on Rough Sets and Knowledge Technology
Year:
2012

Citing 3
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Abstract

Multigranulation is a new developing approach, which can be used for the constructing approximations of target concept. Optimistic multigranulation rough set is consistent to the disjunctive explanation of multigranulation structure while pessimistic multigranulation rough set is consistent to the conjunctive explanation of multigranulation structure. To study the multigranulation structure with both disjunctive and conjunctive explanations, the concept of hybrid multigranulation structure is firstly proposed. The hybrid multigranulation rough set is also proposed. The hybrid multigranulation structure and the corresponding rough set are generalizations of traditional multigranulation structures and rough sets, respectively.