Graph Regularized Nonnegative Matrix Factorization with Sparse Coding

Table 4

Sparseness comparison for different NMF models under different levels (, ) on YALE database.

Method	Average sparseness on	Average sparseness on	Average sparseness on	Average sparseness on
	()	()	()	()
NMF	0.412778	0.389463	0.469252	0.401235
LNMF	0.703995	0.025648	0.774678	0.027278
GNMF	0.457980	0.396353	0.536095	0.413464
FMD-NMF	0.512505	0.373300	0.605472	0.380108
S-GRNMF_SC	0.607605	0.428920	0.689776	0.446257