Parameter | Estimate | SE | RMSE | MAE | R 2 | RMSE (CV) | |
---|---|---|---|---|---|---|---|
Simple H–D model \({H}_{ij}=1.3+a\times {e}^{-b\times {e}^{-c\times {DBH}_{ij}}}+{\varepsilon }_{ij}\) | |||||||
a | 26.867225 | 0.922861 | 4.57 | 3.43 | 0.68 | 4.57 | |
b | 2.654334 | 0.119640 | |||||
c | 0.024083 | 0.001615 | |||||
Simple NLME H–D model \({H}_{ij}=1.3+\left(a+{u}_{i}\right)\times {e}^{-b\times {e}^{-c\times DB{H}_{ij}}}+{\varepsilon }_{ij}\) \({u}_{i}N\left(0,D\right)\) \({\varepsilon }_{i}N\left[0,{R}_{i}\right]\) | |||||||
a | 27.593612 | 1.1309101 | 4.24 | 3.20 | 0.72 | 4.37 | |
b | 2.506014 | 0.1331214 | |||||
c | 0.022559 | 0.0016667 | |||||
\({\sigma }_{u}^{2}\) | 4.771740 | 2.184431 | |||||
\({\sigma }^{2}\) | 1.292337 | 1.136810 | |||||
\(\delta\) | 0.3023997 | ||||||
Generalized H–D model \({H}_{ij}=1.3+\left(a0+a1\times {H}_{dom}A{A}_{i}\right)\times {e}^{-\left(b0+b1\times RangeDBHA{A}_{i}\right)\times {e}^{-c0\times {DBH}_{ij}}}+{\varepsilon }_{ij}\) | |||||||
a0 | 16.250751 | 1.774237 | 4.26 | 3.16 | 0.72 | 4.29 | |
a1 | 0.398350 | 0.063317 | |||||
b0 | 1.090395 | 0.353957 | |||||
b1 | 0.008893 | 0.002231 | |||||
c0 | 0.024126 | 0.001587 | |||||
Generalized NLME H–D model \({H}_{ij}=1.3+\left(a0+{u}_{i}+a1\times {H}_{dom}A{A}_{i}\right)\times {e}^{-\left(b0+b1\times RangeDBHA{A}_{i}\right)\times {e}^{-c0\times {DBH}_{ij}}}+{\varepsilon }_{ij}\) \({u}_{i}N\left(0,D\right)\) \({\varepsilon }_{i}N\left[0,{R}_{i}\right]\) | |||||||
a0 | 16.657915 | 1.7012540 | 0 | 4.25 | 3.16 | 0.72 | 4.29 |
a1 | 0.409165 | 0.0596687 | 0 | ||||
b0 | 1.093159 | 0.3614893 | 0.0026 | ||||
b1 | 0.008203 | 0.0023067 | 0.0004 | ||||
c0 | 0.022477 | 0.0016121 | 0 | ||||
\({\sigma }_{u}^{2}\) | 2.35871e-06 | 0.0015358 | |||||
\({\sigma }^{2}\) | 1.23625 | 1.1118678 | |||||
\(\delta\) | 0.3056402 |