Table 5 Comparison of evaluation metrics for different models.
Coal seam | Model | R2 | RMSE | MAE | MAPE |
|---|---|---|---|---|---|
Carboniferous-Permian | BO-RFR | 0.905 | 4.122 | 3.196 | 0.067 |
RFR | 0.876 | 4.703 | 3.347 | 0.072 | |
BO-XGBoost | 0.883 | 4.561 | 3.483 | 0.076 | |
BO-GBDT | 0.871 | 4.795 | 3.598 | 0.077 | |
BO-Adaboost | 0.833 | 5.457 | 4.036 | 0.091 | |
Empirical formulas | 0.640 | 21.093 | 19.460 | 0.484 | |
Jurassic | BO-RFR | 0.949 | 8.799 | 7.198 | 0.073 |
RFR | 0.925 | 10.594 | 8.798 | 0.089 | |
BO-XGBoost | 0.878 | 13.557 | 11.276 | 0.099 | |
BO-GBDT | 0.914 | 11.411 | 8.283 | 0.074 | |
BO-Adaboost | 0.854 | 14.846 | 12.913 | 0.131 | |
Empirical formulas | 0.642 | 63.351 | 55.502 | 0.450 |
