ACC (%)						NMI (%)
k	K-means	NMF	$L_{2, 1}$ NMF	GNMF	$L_{(r, c)}$ NMF	K-means	NMF	$L_{2, 1}$ NMF	GNMF	$L_{(r, c)}$ NMF
2	71.52	71.52	87.58	72.73	90.91	26.43	18.35	48.91	19.54	57.68
3	52.93	59.19	60.81	58.59	61.21	23.97	35.65	38.29	32.51	33.17
4	45.91	48.48	49.7	49.24	48.48	26.69	27.05	31.71	27.65	30.59
5	42.67	49.82	48.24	53.30	49.21	26.74	33.28	33.47	34.53	37.4
6	41.21	49.8	46.46	47.47	49.7	31.78	36.62	32.34	37.09	39.4
7	44.42	49.18	46.67	47.62	51.69	38.01	40.14	39.54	38.43	43.59
8	49.17	50.45	49.39	48.11	49.47	47.74	48.13	46.08	45.76	46.34
9	39.46	39.12	40.94	41.08	45.66	40.68	38.09	38.73	40.68	41.58
10	36.12	40.91	41.33	40.61	43.03	36.75	37.73	41.04	38.28	41.59
11	39.61	37.69	42.81	33.88	43.09	42.72	39.35	43.97	35.73	45.47
12	40.25	39.8	41.46	40.15	45.56	43.82	41.57	43.34	41.49	47.66
13	40	40.7	37.76	41.03	42.05	45.68	43.2	41.59	43.39	44.82
14	38.83	39.83	39.96	37.66	40.65	45.78	43.76	44.99	41.83	45.44
15	38.63	39.31	38.55	36.97	42.42	46.64	45.65	44.21	44.86	47.25
Avg.	44.33	46.84	47.97	46.31	50.22	37.38	37.75	40.58	37.26	42.99