Table 9. Effect of varying numbers of clusters.

K	Validation results (%)				Test results (%)
	F1-score	Precision	Recall	Accuracy	F1-score	Precision	Recall	Accuracy
3	97.42	96.86	98.02	97.79	97.47	96.95	98.04	97.81
4	96.97	96.14	97.94	97.38	97.04	96.32	97.89	97.43
5	98.59	98.37	98.82	98.78	98.40	98.24	98.55	98.62
6	97.79	97.19	98.47	98.10	97.74	97.20	98.33	98.04