Table 4.

Number of sections with different risk levels in the different datasets.

Dataset	Balancing Algorithm	Total	L_1	L_2	L_3
Original dataset	/	1344	1093	168	83
Under-sampling	●PG	249	83	83	83
	RUS	249	83	83	83
	ENN	1124	1023	18	83
	●ALLKNN	1065	948	34	83
Over-sampling	ROS	3279	1093	1093	1093
	SMOTE	3279	1093	1093	1093
	ADASYN	3278	1093	1099	1086
	Borderline-SMOTE	3279	1093	1093	1093
	SMOTENC	3279	1093	1093	1093
Mixed sampling	SMOTEENN	2394	598	798	998
	SMOT-Tomek Links	3219	1068	1066	1085