An Application of a Three-Stage XGBoost-Based Model to Sales Forecasting of a Cross-Border E-Commerce Enterprise

Table 7

The results of C-XGBoost for the test set.

Test set	Days	C12_j	C12_j_XGBoost model	Depth and min_child_weight	Training set 1		Test set
					ME	MAE	ME	MAE
348th–372th	25	3	C12_3_XGBoost model	(9, 2)	0.351	0.636	4.385	4.400
373rd–381st	9	4	C12_4_XGBoost model	(10, 2)	0.339	0.591	1.778	2.000
348th–381st	34	—	—	—	—	—	3.647	3.765