Table 6 Performance summary of the models.

From: Estimating the surface chloride concentration of marine concrete utilizing advanced hybrid machine learning models

Set

Model

R2

Adj R2

RMSE

MAE

RSR

Training

ANN-GTO

0.89

0.89

0.32

0.24

0.34

ANN-GWO

0.90

0.90

0.23

0.23

0.24

SVR GTO

0.93

0.93

0.21

0.17

0.22

SVR GWO

0.95

0.95

0.11

0.07

0.10

Testing

ANN-GTO

0.90

0.89

0.34

0.23

0.32

ANN-GWO

0.92

0.91

0.26

0.21

0.26

SVR GTO

0.95

0.95

0.23

0.18

0.21

SVR GWO

0.96

0.96

0.11

0.08

0.10

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