Global Clustering Quality Coefficient Assessing the Efficiency of PCA Class Assignment

Table 1

Distance between the centers of the M, T, and N clusters and perimeter.

Cluster	M	T	N	Perimeter ()
Scores associated with the unprocessed spectra
M	—	3,9721	3,7719	10,3115
T	3,9721	—	2,5675
N	3,7719	2,5675	—
Scores associated with the spectra preprocessed with the selective amplifier
M	—	7,1051	6,7704	19,4517
T	7,1051	—	5,5762
N	6,7704	5,5762	—
Scores associated with the spectra preprocessed with the selective amplifier
M	—	14,8991	13,4897	43,1363
T	14,8991	—	14,7475
N	13,4897	14,7475	—
Scores associated with the spectra preprocessed with the; amplifying selector
M	—	5,0030	3,9815	15,2936
T	5,0030	—	6,3091
N	3,9815	6,3091	—