Incremental Graph Regulated Nonnegative Matrix Factorization for Face Recognition

Table 3

The recognition rates (%) for the FERET database during adding 2 batches of images belonging to different classes.

	Supervised methods		Unsupervised methods
	BIGNMF-S	GNMF-S	BIGNMF-U	GNMF-U	IOPNMF	NMF
Start	58.53	58.53	57.24	57.24	49.54	55.06
Add 1	63.41	60.36	60.46	61.93	59.63	59.28
Add 2	69.14	70.94	69.08	71.43	67	67.75