Incremental Nonnegative Matrix Factorization for Face Recognition

Table 6

Running times (s) on CMU PIE database.

Training number	NMF(s)	BNMF(s)	INMF(s)
7	79.58	57.35	37.24
14	144.52	114.61	89.50
21	208.20	164.18	124.45
28	267.97	215.94	176.23