Detecting the Risk of Customer Churn in Telecom Sector: A Comparative Study

Table 4

Performance evaluation of applying HPO methods to the SVM classifier based on low-ratio undersampling strategy (0.3 and 0.4).

Dataset	Optimization algorithm	Accuracy	Recall	Precision	AUC	F1-score	MAE
Dataset 1	Default HPs	0.89	0.36	0.73	0.66	0.71	0.113
	GS	0.92	0.65	0.76	0.80	0.83	0.081
	RS	0.92	0.67	0.75	0.81	0.83	0.080
	GA-DEAP	0.92	0.66	0.74	0.81	0.83	0.083
	GA-TPOT	0.92	0.65	0.75	0.80	0.83	0.082
Dataset 2	Default HPs	0.77	0.46	0.64	0.67	0.69	0.226
	GS	0.78	0.54	0.64	0.71	0.72	0.215
	RS	0.78	0.54	0.64	0.71	0.72	0.215
	GA-DEAP	0.83	0.63	0.72	0.76	0.78	0.173
	GA-TPOT	0.77	0.50	0.62	0.68	0.70	0.229