Table 2: Face-verification accuracy results of human and a baseline algorithm [28].

Age Gap 0–5 Gap 6–10 Gap 11–15 Gap 16+ <18 0.775 0.344 0.744 0.155 0.751 0.078 0.789 0.125 18–29 0.784 0.420 0.792 0.257 0.793 0.134 0.812 0.080 30–39 0.821 0.452 0.803 0.300 0.743 0.231 * 40+ 0.750 0.800 * * *

Note: (1) “’’ means “accuracy of human experiment accuracy of PCA algorithm’’; (2) “*’’ indicates there are not enough data for evaluation. The same notations apply for other tables as well.