Global Clustering Quality Coefficient Assessing the Efficiency of PCA Class Assignment

Table 2

Distance between the two closest points on the periphery of two of the M, T, and N clusters.

Cluster	M	T	N
Associated with the unprocessed spectra
M	—	2,9038	0,1687
T	2,9038	—	0,7674
N	0,1687	0,7674	—
Associated with the spectra processed with the selective amplifier
M	—	5,3510	1,7744
T	5,3510	—	3,8290
N	1,7744	3,8290	—
Associated with the spectra processed with the selective amplifier
M	—	13,3527	4,6160
T	13,3527	—	12,5518
N	4,6160	12,5518	—
Associated with the spectra processed with the amplifying selector
M	—	4,4680	1,9256
T	4,4680	—	4,3929
N	1,9256	4,3929	—