Table 3.

Comparison between BPSO and SFS. The common features between the subsets obtained from BPSO and SFS by using the three classifiers are marked in bold font.

Classifier	BPSO (gbest that have best fitness between 200 runs)	SFS (combination of features with minimal error)
QDA	LE, VarEn, W1, W4, D1, D2, D4, D5, D8 , D9	TR, LE, SE, VarEn, W1, W2, W4, D8,  D9
LDA	SE, VarEn, W1, W2, D1, D4, D8, MPF	SE, VarEn, W2, W3, D1, D3, D7, D8,  D9, MPF
KNN	LE, SE, VarEn, W3, W4, D1, D3, D5, D6, D8	TR, LE, SE, VarEn, W1, W2, W3, W4, W5, D1, D2, D3, D4, D7, D8, MPF