Table 4. Classification results for two classes—control and early mild cognitive impairment.

The best results for each test metric is indicated in bold italics.

Model	Train accuracy	Validation accuracy	Test accuracy	Test sensitivity	Test specificity
Siamese 3D	0.7331	0.7344	0.6719	0.6749	0.6511
ViT	0.7932	0.7020	0.6320	0.6720	0.6311
DenseNet	0.9596	0.7383	0.5938	0.6094	0.5913
EfficientNet B7	0.5807	0.6523	0.5042	0.4915	0.4640