Table 4
Error estimation using coefficient of determination (R2) values for PLATO target test planets.
| Predicted quantity DNN | WASP-121 b* | HATS-42 b* | NGTS-17 b* | WASP-23 b* | NGTS-1 b* |
|---|---|---|---|---|---|
| Temperature | 0.9979 | 0.9975 | 0.9950 | 0.9967 | 0.9912 |
| Vertical wind | 0.7536 | 0.2036 | 0.0686 | –0.2430 | –6.9838 |
| Zonal wind | 0.9894 | 0.9525 | 0.8694 | 0.9331 | 0.8598 |
| Meridional wind | 0.9217 | 0.8113 | 0.7734 | 0.9542 | 0.4140 |
| Predicted quantity XGBoost | WASP-121 b* | HATS-42 b* | NGTS-17 b* | WASP-23 b* | NGTS-1 b* |
| Temperature | 0.9716 | 0.9934 | 0.9570 | 0.9248 | 0.7059 |
| Vertical wind | 0.0769 | 0.0384 | 0.0560 | 0.1222 | 0.0383 |
| Zonal wind | 0.8122 | 0.8195 | 0.5517 | 0.8997 | 0.5996 |
| Meridional wind | 0.4960 | 0.6371 | 0.5835 | 0.7080 | 0.3329 |
Notes. R2 (Sect. 3.3) of DNN and XGBoost model predictions compared to the ExoRad GCM values for the five target planets, for each prediction quantity. All R2 of the temperature prediction of the DNN are above 0.99, while the wind predictions, especially for the vertical wind, show worse results. The XGBoost predictions follow the same trend but are a bit worse.
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