Table 4 Statistical indicators of the developed soft computing models in the training and testing Phases.

From: AI-based forecasting of groundwater corrosion and scaling indices in semi-arid regions using 25-year data analysis

Index

LSI

RSI

PSI

Stage

Model

R2

RMSE

R2

RMSE

R2

RMSE

Train

ANN

0.91

0.11

0.79

0.23

0.80

0.23

SVM

0.93

0.1

0.83

0.21

0.83

0.21

MARS

0.92

0.1

0.81

0.21

0.83

0.21

RF

0.97

0.07

0.95

0.12

0.95

0.12

Test

ANN

0.90

0.11

0.78

0.23

0.80

0.22

SVM

0.92

0.11

0.81

0.21

0.82

0.21

MARS

0.9

0.11

0.81

0.21

0.81

0.21

RF

0.88

0.14

0.77

0.23

0.79

0.22

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