Granular and rough computing on covering
Jun Xie, Tsau Young Lin, William Zhu · 2012
Covering-based rough set (CRS) is a meaningful and important generalization of Pawlak's rough set theory. The primary goal of this paper is to extend the formal study to partial covering (PCov) in terms of the global granular computing model (global/2nd GrC model). The main focus is to investigate the "best" approximations, where "best" was used by Pawlak in his 1982 paper. The study includes a comparison with many existing theories.