Table 6.

Five classifiers performance with feature selection.

Classifier	Initial	AHM	cHM	AC	HM
Type	XGBoost	XGBoost	XGBoost	SVM	XGBoost
FS	14	12	16	8	15
DS	120:120	60:120	60:120	60:60	60:60
CV	91.7%	97.2%	90.6%	93.3%	86.7%
DST	80:80	40:80	40:80	40:40	40:40
Final	76.9%	88.3%	77.5%	87.5%	56.25%

Initial, AD&cMCI vs HC&MCI classifier; AHM, AD vs HC&MCI classifier; cHM, cMCI vs HC&MCI classifier; AC, AD vs cMCI classifier; HM, HC vs MCI classifier