Multimode Process Monitoring Method Based on Multiblock Projection Nonnegative Matrix Factorization

Table 3

Computational time.

Method	Computational time (s)
	Offline modeling time	Online monitoring time
PCA	0.35	0.0015
NMF	0.78	0.0021
PNMF	2.06	0.0004
MPNMF	10.9	0.0011