A Constrained Algorithm Based NMF_α for Image Representation

Table 6

The comparison of normalized mutual information on the Caltech 101 Database.

	Normalized mutual information (%)
	CNMF
2	21.05	38.17	38.20 ± 0.18	37.48 ± 0.21	40.08 ± 2.19
3	31.62	40.63	40.68 ± 0.15	40.05 ± 0.14	41.88 ± 1.24
4	27.60	34.36	34.41 ± 0.79	34.12 ± 0.91	36.41 ± 1.17
5	34.46	35.82	36.00 ± 0.99	35.42 ± 1.01	37.20 ± 1.78
6	34.85	38.97	39.16 ± 0.86	38.53 ± 1.11	39.64 ± 1.83
7	34.88	37.67	37.86 ± 0.47	37.47 ± 0.49	39.86 ± 2.58
8	32.63	37.43	37.71 ± 0.39	37.22 ± 0.42	37.91 ± 2.18
9	31.20	35.97	36.21 ± 0.60	35.86 ± 0.63	37.73 ± 0.67
10	31.21	35.71	36.06 ± 0.02	35.68 ± 0.03	37.48 ± 0.22
Avg.	31.05	37.19	37.37	36.87	38.69