Optimization of Tree-Based Machine Learning Models to Predict the Length of Hospital Stay Using Genetic Algorithm

Table 8

The percentage change of the absolute error in the GA-optimized models.

No.	Model	Mean (%)	Median (%)	SD (%)	IQR (%)	Min	Max (%)
1	DT_GA	−10	−17	−10	100	—	−9
2	RF_GA	7	31	−4	−20	—	−2
3	XGB_GA	−37	−56	−28	−50	—	−26