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
14	55.48	61.9	63.25	57.86	71.05	69.19	73.93	75.17	72.42	80.29
16	53.75	62.87	67.33	62.71	63.25	70.84	76.56	79.23	77.57	76.37
18	57.67	63.78	65.37	64.07	67.3	74.91	78.32	77.78	78.78	80.05
20	54.57	64.7	63.97	64.67	65.67	71.53	78.51	78.31	77.25	81.06
22	56.06	63	63.88	63.64	65.79	73.4	78.51	79.2	78.66	80.18
24	55.11	61.03	62.31	59.03	61.28	73.08	76.99	76.88	75.69	77.09
26	55.33	60.15	61.69	60.38	62.18	73.91	76.76	77.88	75.80	79.1
28	56.76	63.45	62.05	60.71	62.67	76.14	78.82	77.59	77.74	78.58
30	52.02	56.27	57.16	57.56	60.29	72.17	75.2	76.06	76.95	77.91
32	51.73	56.71	57.04	54.90	58.67	72.63	76.28	76	74.99	76.71
34	51.04	56.31	58.53	54.41	62.63	72.65	75.97	77.07	75.28	79.44
36	51.7	57.81	55.65	57.87	56.65	73.44	77.56	76.19	77.70	76.71
38	52.75	59.02	58.84	61.93	61.18	74.62	78.84	78.49	79.80	80.37
40	50.12	55.55	56.15	55.67	58.45	73.6	75.53	75.9	75.76	77.34
Avg.	53.86	60.18	60.94	59.67	62.64	73.00	76.98	77.26	76.74	78.65