Graph Regularized Nonnegative Matrix Factorization with Sparse Coding

Table 7

Clustering performance on COIL20 database.

	AC (%)					NMI (%)
	-means	NMF	SNMF	GNMF	GRNMF_SC	-means	NMF	SNMF	GNMF	GRNMF_SC
6	71.4 ± 14.3	66.1 ± 9.1	71.2 ± 9.3	82.6 ± 9.3	85.7 ± 8.6	70.1 ± 12.5	71.2 ± 11.2	70.5 ± 9.9	86.6 ± 10.8	87.1 ± 9.2
8	66.4 ± 8.5	65.4 ± 5.3	68.3 ± 6.2	83.0 ± 7.8	85.4 ± 7.0	68.0 ± 7.8	72.8 ± 7.1	74.3 ± 8.5	86.7 ± 8.0	86.4 ± 9.3
10	64.3 ± 7.8	63.5 ± 6.2	65.7 ± 5.6	82.5 ± 6.9	84.3 ± 6.6	68.5 ± 7.2	73.5 ± 8.5	74.5 ± 6.6	85.5 ± 7.5	86.2 ± 6.1
12	63.8 ± 6.9	62.7 ± 5.3	65.2 ± 5.1	80.8 ± 7.9	83.0 ± 5.1	68.7 ± 5.5	72.1 ± 5.6	73.3 ± 7.4	84.7 ± 4.7	87.3 ± 5.0
14	61.2 ± 5.1	61.5 ± 2.7	64.3 ± 3.7	78.9 ± 3.0	82.4 ± 2.9	69.2 ± 3.1	71.8 ± 2.9	72.6 ± 4.8	83.6 ± 4.0	87.5 ± 3.9
16	62.8 ± 5.5	62.2 ± 2.0	65.9 ± 3.4	79.0 ± 3.7	81.9 ± 4.6	70.0 ± 2.8	70.3 ± 2.8	71.6 ± 3.2	83.2 ± 3.0	86.3 ± 2.3
18	62.6 ± 4.9	60.5 ± 2.4	63.2 ± 1.7	77.6 ± 2.7	80.4 ± 2.1	71.2 ± 3.1	71.1 ± 2.4	73.4 ± 1.6	82.5 ± 2.5	86.1 ± 0.4
20	61.5	60.4	63.6	77.2	77.9	73.9	70.3	74.9	85.4	87.2
Avg.	64.3	62.8	65.9	80.2	82.6	69.9	71.6	73.1	84.8	86.8