Prediction Error and Forecasting Interval Analysis of Decision Trees with an Application in Renewable Energy Supply Forecasting

Figure 4

An example when does not exist. The axis label is : the number of trees splits. MSPE, , and Var are averaged calculations from 200 simulation trials. The black line is the MSPE, the blue line is the , the orange line is , and the red line is the Var. The solid lines are from simulated data, and the dashed lines are theoretical calculations. The parameters values are given as follows: , , , , , and .

(a)

(b)

(c)

(d)