The abstract reports XGBoost performance as R²=0.94, RMSE=12.8, MAE=8.6, yet Table 1 states R²=0.988, RMSE=9.26, MAE=7.22 for the same model. Which set of metrics is correct? Such a significant discrepancy cannot be attributed to rounding and suggests a critical lack of reproducibility or a reporting error that fundamentally misrepresents your model’s capability.