Table 5 The results from the simulation using the change model 1 for the Kalman filter. The mean of sample means of AGB (t·ha−1) and sample variance estimates, the simulated variance, the bias and the RMSE
From: Benefits of past inventory data as prior information for the current inventory
Mean | Estimated std | Simulated std | Bias | RMSE | ||
|---|---|---|---|---|---|---|
True | 128.93 | |||||
Current occasion | HT | 128.87 | 8.72 | 8.60 | 0 | 8.60 |
Model-assisted | 128.90 | 5.31 | 5.24 | 0 | 5.24 | |
Model-based | 128.39 | 5.12 | 5.13 | −0.54 | 5.16 | |
Composite of two occasions | HT | 118.97 | 5.39 | 5.66 | −9.96 | 11.45 |
Model-assisted | 119.45 | 3.28 | 3.80 | −9.48 | 10.22 | |
Model-based | 119.54 | 3.24 | 3.86 | −9.59 | 10.34 | |
Kalman filter | HT | 128.42 | 6.23 | 5.86 | −0.51 | 5.88 |
Model-assisted | 128.80 | 4.50 | 4.00 | −0.13 | 4.00 | |
Model-based | 128.32 | 4.37 | 3.98 | −0.61 | 4.03 |