Table 2 The parameter settings for the predictive models.

From: Modeling energy consumption indexes of an industrial cement ball mill for sustainable production

Parameter

Main Elevator

Motor 1 Current

Motor 2 Current

CatBoost

 Learning rate

0.156

0.03

0.03

 Maximum number of trees

1000 (Default)

1000 (Default)

1000 (Default)

 Maximum depth of trees

6

6

6

XGBoost

 Learning rate

0.26

0.26

0.26

 Maximum number of trees

29

58

35

 Maximum depth of trees

18

18

26

 γ

1.28

2.83

7.62

Random Forest

 Maximum number of trees

99

119

77

Support Vector Regression

 Kernel

RBF

RBF

RBF

Convolutional Neural Network

 Activation Function

ReLU

ReLU

ReLU

 Training Epochs

100

100

100

 Batch Size

32

32

32

Optimizer

Adaptive Moment Estimation

  1. *Radial basis function (RBF), **Rectified linear unit (ReLU).