A Self-Adaptive Fuzzy c-Means Algorithm for Determining the Optimal Number of Clusters

Table 9

The value of clustering validity index on SubKDD.

2	0.646989	1.324434	550.166676	1.574431
3	0.260755	0.378775	222.020838	1.090289
4	0.133843	0.062126	119.544560	0.511238
5	0.234402	0.052499	202.641204	0.537852
6	0.180728	0.054938	156.812271	0.583800
7	0.134636	0.047514	119.029265	0.619720
8	0.104511	0.032849	91.9852740	0.690873
9	0.129721	0.027639	74.0128470	0.562636
10	0.06822	0.027025	91.3528560	0.528528