Table 2 Performance comparison of ML, DL, and time series models (lag = 5, output = 1).

From: Electric-load forecasting using interval models based on granularity and justifiable principles

Model

Test RMSE

Test MAE

Test \(R^2\)

Test MAPE

Train RMSE

Train MAE

Train \(R^2\)

Train MAPE

Linear regression

136.44

104.69

0.9872

2.34

136.74

104.16

0.9844

2.74

Decision tree

174.27

131.85

0.9792

3.07

1.30

0.009

1.0000

0.00

SVM

199.94

150.03

0.9726

3.32

165.70

131.81

0.9771

3.42

KNN

135.13

101.27

0.9875

2.31

103.04

77.22

0.9912

2.03

Boosted ensemble

133.52

99.68

0.9878

2.29

53.38

37.62

0.9976

0.98

Neural net

146.54

111.19

0.9853

2.72

142.32

108.84

0.9831

2.48

LSTM

129.78

100.44

0.9885

2.33

128.05

97.77

0.9863

2.58

Transformer

170.78

137.93

0.9800

3.04

152.29

122.06

0.9807

3.08

ARIMA

424.56

325.77

0.8765

7.11

404.60

311.64

0.8637

7.71

SARIMA

399.40

303.75

0.8907

6.65

381.35

290.00

0.8789

7.21