Table 2.
Cross-validation and independent test scores of random forest regression model for predicting small ruminants (sheep & goat) density with different buffer distances and data split ratios for 2015 (lower RMSE/MAE and higher R2 indicate better model fit).
Buffer distance | Cross-Validation score | Independent test score | ||||
---|---|---|---|---|---|---|
RMSE | R2 | MAE | RMSE | R2 | MAE | |
same location | ||||||
70-30 | 70 | 0.49 | 17.29 | 84.17 | 0.48 | 20.93 |
80-20 | 65.3 | 0.59 | 16.74 | 87.21 | 0.29 | 19.29 |
90-10 | 68.96 | 0.63 | 17.08 | 50.29 | 0.21 | 14 |
2 km buffer | ||||||
70-30 | 52.22 | 0.51 | 13.4 | 62.96 | 0.7 | 12.35 |
80-20 | 61.09 | 0.51 | 14.46 | 22.98 | 0.59 | 8.65 |
90-10 | 57.13 | 0.54 | 13.13 | 20.33 | 0.68 | 8.38 |
5 km buffer | ||||||
70-30 | 49.55 | 0.6 | 11.26 | 30.2 | 0.33 | 7.09 |
80-20 | 45.63 | 0.62 | 9.9 | 35.77 | 0.25 | 7.9 |
90-10 | 44.07 | 0.6 | 9.3 | 35.67 | 0.38 | 7.22 |
10 km buffer | ||||||
70-30 | 21.11 | 0.62 | 5.84 | 11.13 | 0.79 | 4.74 |
80-20 | 19.45 | 0.67 | 5.4 | 12.68 | 0.73 | 4.94 |
90-10 | 17.53 | 0.76 | 4.87 | 11.75 | 0.82 | 4.74 |
The Cross-Validation and Independent test scores were computed between the observed (census data) and predicted (RF model) livestock density values using the training and testing datasets, respectively.