Semisupervised Tangent Space Discriminant Analysis

Table 1

Mean values and standard deviations of the unlabeled error rates (%) with different label configurations on the face data sets.

Method	Yale 3	Yale 4	ORL 2	ORL 3
Baseline	49.50 ± 4.86	43.93 ± 4.71	30.31 ± 3.11	21.13 ± 2.29
PCA	47.67 ± 4.40	42.60 ± 5.05	29.23 ± 2.56	20.30 ± 2.22
LDA	32.56 ± 3.85	25.60 ± 2.98	17.17 ± 3.23	8.05 ± 2.51
SELF	54.22 ± 3.88	52.07 ± 4.67	48.79 ± 4.39	37.48 ± 2.81
SDA	32.33 ± 4.11	25.93 ± 3.22	16.67 ± 3.36	7.85 ± 2.48
STSD	32.28 ± 4.09	25.27 ± 3.61	16.00 ± 3.03	7.73 ± 2.30