Page 419 - Contributed Paper Session (CPS) - Volume 6

CPS2007 Jai-Hua Yen et al.
Table 3.
Comparison of species richness estimator for incidence data based on 500
simulation data sets and 200 bootstrapping trials under a mixture model (0.8 ×
(0.1,0.3) + 0.2 × (0.4,1)), with ̅ = 0.29, CV = 0.7, = 100, = 40,
= 5, and = 0.67
Mean Estimated
error error Method ̂ Bias Sample Estimated Sample
rate rate s.e s.e RMSE
0 0 True 72 32.4 19.8 94.98 -5.02 11.38 10.76 12.44
0.053 0.056 Observed 69.7 30.4 19 90.91 -9.09 11.13 10.22 14.37
†
*
Adjusted 72.5 32.9 19.9 94.7 -5.3 12.56 12.98 13.63
†
0.097 0.1 Observed 67.3 28.8 18.3 87.32 -12.68 11.12 9.91 16.87
Adjusted 72.3 33.1 19.8 95.78 -4.22 21.14 15.12 21.56
*
†
0.15 0.155 Observed 64.7 26.4 17.7 82.27 -17.73 11.77 9.06 21.28
Adjusted 72.7 33.1 20.1 96.26 -3.74 21.81 17.28 22.13
*
0.199 0.203 Observed 63.1 24.9 17.2 78.81 -21.19 9.08 8.36 23.06
*
†
Adjusted 73.9 33.9 20.3 98.02 -1.98 22.62 19.58 22.71
* Denotes the smaller bias. Denotes the smaller RMSE.
†

Table 4.
Comparison of species richness estimator for incidence data based on 500
simulation data sets and 200 bootstrapping trials under a mixture model (0.8 ×
(0.1,0.3) + 0.2 × (0.4,1)), with ̅ = 0.29, CV = 0.7, = 100, = 40,
= 20, and = 0.67.
Mean Estimated
error error Method ̂ Bias Sample Estimated Sample
s.e s.e RMSE
rate rate
0 0 True 97.8 7 11.9 100.25 0.25 2.56 2.43 2.57
0.053 0.056 Observed 94.7 6.6 11.1 97.08 -2.92 2.98 2.37 4.17
†
*
Adjusted 98.5 7.1 12 100.62 0.62 4.55 5.8 4.59
0.097 0.102 Observed 91.5 6.2 10.4 93.78 -6.22 3.72 2.34 7.25
*
†
Adjusted 98.6 7.2 12 100.76 0.76 6.24 6.97 6.29
0.15 0.151 Observed 88.2 5.8 9.8 90.42 -9.58 3.69 2.31 10.27
†
*
Adjusted 98.5 7.2 12.1 100.62 0.62 7.5 7.5 7.53
0.199 0.204 Observed 85.4 5.4 9.1 87.45 -12.55 4.2 2.3 13.24
Adjusted 99.9 7.3 12.2 102.08 2.08 9.64 7.98 9.86
†
*
* Denotes the smaller bias. Denotes the smaller RMSE.
†
Table 5.
Summary of the data set of weed species frequency counts at Soft Bridge county
in the North of Taiwan, with = 12.
Frequency
Counts 18 9 12 8 6 4 1 4 3 3 2 3

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