Mathematical Problems in Engineering

Research Article

An Inexact Update Method with Double Parameters for Nonnegative Matrix Factorization

Table 1

and .


()		Iter	Fun	Time

(50,50,4)	Algorithm 3	2585		6.989
(50,50,4)	NNMF	5021		13.104
(100,50,5)	Algorithm 3	2448		13.037
(100,50,5)	NNMF	7074		36.535
(100,100,5)	Algorithm 3	6970		47.876
(100,100,5)	NNMF	7506		59.702
(200,200,4)	Algorithm 3	4451		78.766
(200,200,4)	NNMF	18033		198.386
(200,200,8)	Algorithm 3	18930		385.494
(200,200,8)	NNMF	19459		391.797
(200,300,6)	Algorithm 3	14356		295.138
(200,300,6)	NNMF	20542		424.479
(500,100,20)	Algorithm 3	14356		295.138
(500,100,20)	NNMF	20542		424.479