Graph Regularized Nonnegative Matrix Factorization with Sparse Coding

Table 3

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

Method	Average sparseness on	Average sparseness on	Average sparseness on	Average sparseness on
	()	()	()	()
NMF	0.262122	0.295615	0.311064	0.335885
LNMF	0.633281	0.006225	0.705528	0.007179
GNMF	0.264691	0.231159	0.318175	0.305258
FMD-NMF	0.433127	0.220854	0.505354	0.289466
S-GRNMF_SC	0.383589	0.312841	0.468214	0.364870