Diagnosis of Alzheimer’s Disease Using Dual-Tree Complex Wavelet Transform, PCA, and Feed-Forward Neural Network

Table 5

Detailed data of PCA.

No. of prin. comp.	1	2	3	4	5	6	7	8	9
Variance (%)	63.18	72.15	77.08	80.28	83.05	84.55	85.68	86.59	87.47
No. of prin. comp.	10	11	12	13	14	15	16	17	18
Variance (%)	88.18	88.28	89.41	89.96	90.44	90.86	91.23	91.58	91.91