Table 3:

cluster stability

k	homogeneity	completeness	V measure	adj. rand info.	adj. mutual info.
3	0.79	0.67	0.72	0.71	0.71
4	0.76	0.74	0.75	0.72	0.73
5	0.77	0.77	0.77	0.67	0.74
6	0.74	0.77	0.76	0.63	0.72