Discrimination between Alzheimer's Disease and Mild Cognitive Impairment Using SOM and PSO-SVM

Table 3

PCs and their proportion of total variation.

Features	No. of principal component
Proportion (%)	C1	C2	C3	C4	C5	C6	C7	C8
Volume features (3)	64.16*	31.57*	4.27
Shape features (17)	48.79*	23.39*	9.43*	6.45*	3.28*	2.13*	1.01*	0.73*
Volume + shape (20)	49.31*	19.98*	13.62*	6.93*	4.47*	2.35*	0.99	0.72