Table 4 Error metrices of both models.

From: Predicting 28-day compressive strength of fibre-reinforced self-compacting concrete (FR-SCC) using MEP and GEP

 

GEP

MEP

Training

Validation

Training

Validation

MAE

1.97

2.11

3.02

2.75

RMSE

3.06

2.69

4.74

3.58

\({\text{R}}^{2}\)

0.941

0.965

0.852

0.973

ƿ

0.032

0.028

0.049

0.040

a20-index

0.981

1

0.945

0.956

OF

0.0296

0.031