Sparsity Preserving Discriminant Projections with Applications to Face Recognition

Table 4

Time (s) for acquiring the discriminant vectors of SPP and SPDP on Yale ( is the training sample size).

Methods
SPP	0.3729	0.6387	1.0335	1.5506	2.1609	2.9087	4.0471
SPDP	0.2475	0.4016	0.4835	0.5352	0.6827	0.7036	0.8263