fig7

Figure 7. Exhaustive evaluation of plastic strain characteristics. All possible feature combinations were assessed through multiple iterations of training and prediction. By comparing the regression accuracy and error of the model, the subset of characteristic parameters with the greatest impact on target strength performance is determined. (A) Training set R²; (B) Training set RMSE; (C) Test set R²; (D) Test set RMSE. R²: The coefficient of determination; RMSE: root mean square error; B/G: bulk/shear modulus.