Method | Statistic | Basal area error (m2) | Volume error (m3) | ||
---|---|---|---|---|---|
Prediction set | Validation set | Prediction set | Validation set | ||
MLR-RK | ME | 0.00 | − 0.03 | – | – |
MAE | 0.03 | 0.09 | – | – | |
RMSE | 0.04 | 0.14 | – | – | |
RMSE (%) | 2.80 | 9.30 | – | – | |
RI | 49.09 | 1.27 | – | – | |
RF-RK | ME | 0.01 | − 0.05 | 0.00 | − 1.03 |
MAE | 0.04 | 0.10 | 0.63 | 1.70 | |
RMSE | 0.05 | 0.15 | 0.77 | 2.26 | |
RMSE (%) | 3.08 | 10.08 | 5.02 | 15.25 | |
RI | − 24.19 | − 5.66 | − 5.24 | − 2.28 | |
SVM-RK | ME | 0.01 | − 0.03 | − 0.32 | − 0.57 |
MAE | 0.05 | 0.10 | 0.80 | 1.22 | |
RMSE | 0.06 | 0.15 | 1.11 | 1.74 | |
RMSE (%) | 4.09 | 9.83 | 7.19 | 11.72 | |
RI | 1.21 | − 4.69 | 30.93 | 13.70 | |
ANN-RK | ME | 0.02 | − 0.06 | – | – |
MAE | 0.04 | 0.06 | – | – | |
RMSE | 0.09 | 0.09 | – | – | |
RMSE (%) | 5.79 | 6.37 | – | – | |
RI | 34.72 | 25.23 | – | – |