Research Article

A Complete Subspace Analysis of Linear Discriminant Analysis and Its Robust Implementation

Table 2

Performance comparisons (%) of some methods on face databases.

DatabasesTS DLDAPCA+LDAMMCDCVLDA/QRLDA/GSVDOurs

ORL236.73 (4.05)29.82 (3.08)18.04 (2.35)16.43 (1.95)21.62 (3.08)19.92 (2.08)16.32 (1.91)
48.45 (1.45)8.60 (1.83)6.52 (1.60)6.12 (1.95)8.45 (1.45)10.45 (1.72)5.31 (1.70)
63.21 (1.31)3.37 (1.62)2.96 (1.31)3.26 (1.14)3.21 (1.31)7.09 (1.34)2.50 (1.11)
81.75 (2.99)2.00 (1.68)2.18 (2.29)2.00 (2.20)1.75 (2.29)4.12 (1.76)1.75 (1.33)

Yale252.88 (4.68)65.14 (8.70)40.07 (4.35)28.77 (15.25)41.66 (5.23)37.81 (4.45)35.81 (3.85)
428.09 (4.51)38.23 (3.68)30.61 (4.80)19.85 (4.18)30.61 (4.80)19.47 (4.02)19.47 (3.06)
622.86 (4.07)23.60 (5.24)21.53 (4.56)12.06 (3.76)24.26 (6.08)12.06 (3.87)11.53 (3.27)
819.33 (4.45)20.00 (5.67)17.44 (6.29)10.44 (3.80)19.33 (4.45)9.66 (3.61)9.55 (3.25)