Constructive methods of rough approximation operators and multigranulation rough sets.
Knowledge-Based Systems(2016)
摘要
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 are investigated.
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关键词
Rough approximation pair,Constructive method,Non-dual multigranulation rough set,Hybrid multigranulation rough set
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