. Author manuscript; available in PMC: 2022 Jul 1.

Published in final edited form as: Med Image Anal. 2021 Apr 20;71:102076. doi: 10.1016/j.media.2021.102076

Table 2:

Results of seven methods in AD identification (i.e., AD vs. CN classification) in six different transfer learning settings.

Source Domain→Target Domain	Method	ACC (%)	SEN (%)	SPE (%)	AUC (%)
ADNI-1→ADNI-2	TCA	74.39	56.79	88.29	80.55
	SA	74.65	61.72	84.88	80.10
	GFK	65.40	55.56	73.17	70.33
	CORAL	77.65	82.71	73.65	85.16
	VoxCNN	83.65	85.80	81.95	90.43
	DANN	87.19	83.33	90.24	90.77
	AD²A (Ours)	89.92	87.65	91.70	94.01
ADNI-2→ADNI-1	TCA	73.62	66.83	79.65	80.61
	SA	73.39	59.51	85.71	80.12
	GFK	62.16	49.27	73.59	65.05
	CORAL	76.38	72.20	80.09	84.00
	VoxCNN	82.33	70.24	93.07	89.94
	DANN	84.17	79.51	88.31	90.01
	AD²A (Ours)	87.84	86.83	88.74	92.07
ADNI-1→ADNI-3	TCA	76.35	60.00	79.33	80.15
	SA	77.89	56.67	81.76	80.33
	GFK	74.55	61.67	76.90	72.22
	CORAL	71.21	58.33	73.56	84.50
	VoxCNN	86.11	61.67	90.57	89.07
	DANN	88.17	61.67	93.00	92.46
	AD²A (Ours)	92.03	66.67	96.65	95.01
ADNI-1+ADNI-2→ADNI-3	TCA	80.21	63.33	83.28	83.00
	SA	83.55	56.67	88.45	85.29
	GFK	75.32	65.00	77.20	76.10
	CORAL	76.35	63.33	78.72	85.87
	VoxCNN	87.66	66.67	91.18	90.74
	DANN	88.69	71.67	91.79	92.82
	AD²A (Ours)	92.54	75.00	95.74	95.66
ADNI-1→AIBL	TCA	68.34	32.39	74.05	50.92
	SA	69.69	36.62	74.94	51.37
	GFK	59.85	46.48	61.97	50.25
	CORAL	54.44	45.07	55.93	54.48
	VoxCNN	85.91	66.20	89.04	86.06
	DANN	86.49	73.24	88.59	90.10
	AD²A (Ours)	88.80	85.92	89.26	92.73
ADNI-1+ADNI-2→AIBL	TCA	69.31	30.99	75.39	51.69
	SA	74.02	26.46	85.84	52.33
	GFK	63.71	36.62	68.00	50.90
	CORAL	57.72	50.70	58.84	57.24
	VoxCNN	87.07	83.10	87.70	92.28
	DANN	88.03	80.28	89.26	93.05
	AD²A (Ours)	90.35	87.32	90.83	95.37