Open Access
Table 1
Comparison of different algorithms based on magnitudes, colors, and photometric images.
| Algorithm | σTeff (K) | σlogg (dex) | σ[Fe/H] (dex) | |||
|---|---|---|---|---|---|---|
| w/o parallax | w/ parallax | w/o parallax | w/ parallax | w/o parallax | w/ parallax | |
| RF_mag | 138.350 | 117.581 | 0.421 | 0.081 | 0.221 | 0.184 |
| XGBoost_mag | 130.065 | 110.121 | 0.380 | 0.080 | 0.201 | 0.171 |
| LightGBM_mag | 126.145 | 107.032 | 0.366 | 0.078 | 0.193 | 0.169 |
| CatBoost_mag | 127.306 | 108.267 | 0.372 | 0.078 | 0.197 | 0.171 |
| RF_color | 115.134 | – | 0.353 | – | 0.183 | – |
| XGBoost_color | 114.972 | – | 0.348 | – | 0.178 | – |
| LightGBM_color | 114.273 | – | 0.344 | – | 0.175 | – |
| CatBoost_color | 113.867 | – | 0.344 | – | 0.174 | – |
| RF_mag&color | 111.317 | 101.980 | 0.338 | 0.078 | 0.182 | 0.164 |
| XGBoost_mag&color | 110.435 | 99.656 | 0.331 | 0.077 | 0.177 | 0.158 |
| LightGBM_mag&color | 110.262 | 99.437 | 0.324 | 0.076 | 0.173 | 0.152 |
| CatBoost_mag&color | 110.201 | 99.331 | 0.321 | 0.076 | 0.173 | 0.151 |
| RF_image | 106.900 | 97.490 | 0.291 | 0.073 | 0.158 | 0.142 |
| XGBoost_image | 106.323 | 97.245 | 0.287 | 0.073 | 0.156 | 0.140 |
| LightGBM_image | 106.070 | 96.920 | 0.286 | 0.072 | 0.155 | 0.140 |
| CatBoost_image | 106.208 | 97.048 | 0.285 | 0.072 | 0.155 | 0.139 |
| ACF | 105.827 | 95.024 | 0.285 | 0.071 | 0.155 | 0.138 |
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