Identifying Patients with Poststroke Mild Cognitive Impairment by Pattern Recognition of Working Memory Load-Related ERP

Table 5

The optimal kernel functions for the classification tasks.

Classification tasks	Features	Optimal kernel functions	Generation number
0-back; (SP-HC)	Peak latency	𝐾Poly+𝐾RBF−1.736	73
	Peak amplitude	𝐾Poly+exp−0.351𝐾RBF+exp𝐾^2RBF	62
	RMS	exp(0.866)𝐾Poly+𝐾RBF+𝐾^2Poly𝐾^2RBF	69
	Theta band power	exp−1.68𝐾^2Poly𝐾^2RBF	79
1-back; (SP-HC)	Peak latency	exp−0.628𝐾RBFexp𝐾RBF	59
	Peak amplitude	exp−0.923𝐾RBF𝐾Poly+𝐾RBFexp𝐾RBF	79
	RMS	exp−0.598𝐾RBF𝐾Poly+𝐾RBF	81
	Theta band power	0.74𝐾Poly𝐾Poly+𝐾RBFexp−0.446+𝐾RBF	62