Incremental Graph Regulated Nonnegative Matrix Factorization for Face Recognition

Table 4

The recognition rates (%) for the CMU-PIE database during adding 5 batches of images belonging to different classes.

	Supervised methods		Unsupervised methods
	BIGNMF-S	GNMF-S	BIGNMF-U	GNMF-U	IOPNMF	NMF
Start	81.37	81.37	79.15	79.64	46.32	79.01
Add 1	81.46	80.78	79.21	78.77	51.23	79.14
Add 2	81.26	81.98	81.29	81.75	54.85	79.85
Add 3	83.28	82.45	81.36	81.03	53.86	79.38
Add 4	83.3	83.45	83.61	83.59	51.96	80.28
Add 5	84.75	84.49	84.73	84.58	51.47	81.97