Page 418 - Contributed Paper Session (CPS) - Volume 6

CPS2007 Jai-Hua Yen et al.
Table 1.
Comparison of species richness estimator for incidence data based on 500
simulation data sets and 200 bootstrapping trials under random uniform (0, 1)
model, with ̅= 0.51, = 0.53, = 100, = 40, = 5, and = 0.91.
Mean Estimated
error error Method ̂ Bias Sample Estimated Sample
rate rate s.e s.e RMSE
0 0 True 85.2 15.3 17.3 91.37 -8.63 4.82 4.19 9.89
0.053 0.058 Observed 81.5 13.9 15.8 87.22 -12.78 5.46 4.06 13.9
†
*
Adjusted 86.3 15.6 17.5 92.05 -7.95 7.17 8.33 10.71
0.097 0.098 Observed 78.3 13.2 14.8 83.72 -16.28 5.29 3.95 17.12
*
Adjusted 86.3 15.9 17.5 92.2 -7.8 7.92 9.4 11.12
†
0.15 0.157 Observed 74 11.7 13.4 78.86 -21.14 5.24 3.75 21.78
†
*
Adjusted 86.8 16 17.6 92.89 -7.11 10.33 10.2 12.54
0.199 0.209 Observed 70.7 10.3 12.7 74.71 -25.29 5.01 3.34 25.78
*
Adjusted 88.3 15.8 18.5 94.34 -5.66 14.05 11.12 15.15
†
†
* Denotes the smaller bias. Denotes the smaller RMSE.
Table 2.
Comparison of species richness estimator for incidence data based on 500
simulation data sets and 200 bootstrapping trials under random uniform (0, 1)
model, with ̅ = 0.51, = 0.53, = 100, = 40, = 20, and = 0.91.
Mean Estimated
error error Method ̂ Bias Sample Estimated Sample
s.e s.e RMSE
rate rate
0 0 True 95.3 4.1 3.9 98.8 -1.2 4.9 4.25 5.06
0.053 0.055 Observed 91.2 3.9 3.6 94.8 -5.2 5.46 4.45 7.53
Adjusted 96.1 4.3 4 97.85 -2.15 5.26 5.39 5.68
†
*
0.097 0.095 Observed 87.3 3.3 3.5 90.1 -9.9 5.15 3.76 11.15
*
Adjusted 95.8 4 4.1 97.1 -2.9 6.52 5.72 7.14
†
0.15 0.151 Observed 82.9 3.1 2.9 85.61 -14.39 5.21 3.79 15.31
*
†
Adjusted 96.7 4.1 3.9 97.94 -2.06 8.94 6.23 9.17
0.199 0.21 Observed 79.2 2.9 2.7 81.79 -18.21 5.25 3.66 18.95
Adjusted 98.8 4.4 4 100.5 0.46 11.52 7.04 11.53
†
*
* Denotes the smaller bias. Denotes the smaller RMSE
†

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