Research Article

Multifeature Extreme Ordinal Ranking Machine for Facial Age Estimation

Table 7

Comparison of different dimensions’ impacts.

Dimensions (after PCA dimension reduction) MAE Runtime(s)

20 (Shape 10 + Texture 10) 5.59 232.5
40 (20 + 20) 4.86 235.7
60 (30 + 30) 4.85 240.2
100 (50 + 50) 4.83 247.2
120 (60 + 60) 4.79 250.3
140 (70 + 70) 4.78 260.2
160 (80 + 80) 4.85 264.4
200 (100 + 100) 4.88 278.0