Abstract—Covering-based rough set theory is an extension to classical rough set. The main purpose of this paper is to study covering rough sets from a topological point of view. The relationship among upper approximations based on topological spaces are explored.
Index Terms—approximation operators, covering roughsets, topological space.
Cite: Nguyen Duc Thuan, "Covering Rough Sets From a Topological Point of View," International Journal of Computer Theory and Engineering vol. 1, no. 5, pp. 606-609, 2009.