Title of article
Invertible approximation operators of generalized rough sets and fuzzy rough sets
Author/Authors
Guilong Liu، نويسنده , , Ying Sai، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2010
Pages
9
From page
2221
To page
2229
Abstract
This paper studies the classes of rough sets and fuzzy rough sets. We discuss the invertible lower and upper approximations and present the necessary and sufficient conditions for the lower approximation to coincide with the upper approximation in both rough sets and fuzzy rough sets. We also study the mathematical properties of a fuzzy rough set induced by a cyclic fuzzy relation.
Keywords
Cyclic fuzzy relation , Invertible mapping , Mapping , Rough set , Fuzzy rough set
Journal title
Information Sciences
Serial Year
2010
Journal title
Information Sciences
Record number
1213972
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