Function S-rough sets
Shi Kai · Journal of Shandong University · 2005
By using S rough sets(singular rough sets), function S rough sets are put forward and their mathematical structure and characteristics are given. Function S rough sets have two forms: one direction function S rough sets and two direction function S rough sets.The relation theorem of function S rough sets and S rough sets is also presented. Function S rough sets is the general form of S rough sets and S rough sets is the special case of Function S rough sets. Function S rough set is a new direction in the study of rough sets.