Table 6 The outcomes of the fivefold validation on the GPM model.

From: Reliable models for calculating the condensation heat transfer inside smooth helical tubes of different flow directions utilizing smart computational techniques

 

The fold chosen as the testing set

Fold 1

Fold 2

Fold 3

Fold 4

Fold 5

MAPE of the model for the training data, (%)

0.03

0.03

0.22

0.03

0.15

MAPE of the model for the testing data, (%)

3.46

3.31

3.36

4.31

3.93

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