Figure 3
The image features two scatter plots arranged side by side. The left plot labelled a displays residual values on the Y-axis against predicted log D values on the X-axis, with blue points representing the data. A red dashed line at 0 indicates the baseline for residuals. The right plot labelled b displays residuals on the Y-axis against predicted log U p values on the X-axis, using green points. This plot also includes a red dashed line at 0. Both plots include a grid background and clear axis labels, illustrating the relationship between predicted values and residuals for two separate variables.Residual plots showing the difference between polynomial regression predictions and XGBoost model outputs for (a) log(D) and (b) log(Up)