Table 4: Statistical information about the best class number for the simulated phantom data set, tumour 2.

CN SNR CP

1 1.003102 0.250000 4.012408 0.399154
2 14.181862 6.814574 2.081107 0.207690
3 26.481251 9.468495 2.796775 0.227157
4 51.409594 19.963755 2.575146 0.142332
5 133.638905 56.426063 2.368389 0.023667