Comparison of twelve types of rough approximations based on j-neighborhood space and j-adhesion neighborhood space

In this paper, we generalize six kinds of rough set models based on j-neighborhood space (i.e., reflexive 1 set, 2 3 similarity 4 5 and 6 set) investigate some their basic properties. Further, propose a new neighborhood called j-adhesion types 7 8 9 10 11 12 to reduce the boundary region accuracy. The fundamental properties approximation operators are investigated. relationship between these is explained. Finally, give comparisons proposed approach with previous Abo-Tabl’s Dai et al.’s approach) from models. Consequently, accuracy improved.