| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 395200 | Information Sciences | 2010 | 9 Pages |
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
Related Topics
Physical Sciences and Engineering
Computer Science
Artificial Intelligence
Authors
Guilong Liu, Ying Sai,