Journal
KNOWLEDGE-BASED SYSTEMS
Volume 91, Issue -, Pages 114-125Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.knosys.2015.09.036
Keywords
Rough approximation pair; Constructive method; Non-dual multigranulation rough set; Hybrid multigranulation rough set
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Funding
- National Natural Science Foundation of China [61175044, 61473239]
- China National Natural Science Foundation of Youth Science Foundation [61305052]
- Innovation Program of Shanghai Municipal Education Commission [13ZZ122]
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Four kinds of constructive methods of rough approximation operators from existing rough sets are established, and the important conclusion is obtained: some rough sets are essentially direct applications of these constructive methods. Moreover, the new notions of non-dual multigranulation rough sets and hybrid multigranulation rough sets are introduced, and some properties ate investigated. (C) 2015 Elsevier B.V. All rights reserved.
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