A Novel Robust Fuzzy Rough Set Model for Feature Selection

Algorithm 1

Feature selection algorithm based on RS-FRS model with SPS.

	Input: a set of condition attributes ; a set of samples .
	Output: selected feature subset
(1)	, according to equation (5), the lower approximation of RS-FRS model is computed;
(2)	Compute every and ;
(3)	Sort according to ;
(4)	whiledo
(5)	Selected the first sample pair ;
(6)	Select one such that and add into ;
(7)	;
(8)	end while
(9)	return