Research Article

Optimizing the Prediction Accuracy of Friction Capacity of Driven Piles in Cohesive Soil Using a Novel Self-Tuning Least Squares Support Vector Machine

Table 1

Performance measurement for training dataset and testing dataset.

Performance measurementFormula

Coefficient of correlation (R)
Root mean square error (RMSE)
Mean absolute error (MAE)

is the actual value; is the predicted value; and is the number of data samples.