Table 3.
Prediction performance metrics for random forest and gradient boosting tree.
| Metric | Random forest | Gradient boosting trees |
|---|---|---|
| MSE (using 2020 data to predict 2021) | 64.54 | 61.4790 |
| MSE (using 2020 data to predict 2022) | 101.205 | 103.5172 |
| MSE (using 2021 data to predict 2022) | 64.9365 | 61.4940 |
| MSE (using 2020 and 2021 data to predict 2022) | 60.414 | 48.0326 |
| R-squared (using 2020 data to predict 2021) | 0.3942 | 0.42293 |
| R-squared (using 2020 data to predict 2022) | 0.081435 | 0.06045 |
| R-squared (using 2021 data to predict 2022) | 0.41062 | 0.44186 |
| R-squared (using 2020 and 2021 data to predict 2022) | 0.45167 | 0.56404 |