REDUCTION OF KNOWLEDGE VIA MINIMAL APPROXIMATION SPACE AND GRAPHS
M. M. El‐Sharkasy · Journal of the Egyptian Mathematical Society · 2018
In this paper, we introduce a simple undirected graph based on a binary relation by using thenotion of right neighborhood and minimal approximation space. Also, we investigate the lowerapproximation and the upper approximation of a subgraph to compute the rough subgraph. Finally, wewill make a reduction of an information system and compute the core of knowledge by using a minimalapproximation space and a graph theory.