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Table 2
Precision, recall, and F1 metrics with their standard deviations (in brackets) obtained for different combinations of features, databases, and free parameter sets, and for each of the classes in the sample: quasars (QSO), galaxies (GAL), and stars (STA).
| Features | Database | Parameter set | Class | Precision (σ) | Recall (σ) | F1(σ) |
|---|---|---|---|---|---|---|
| Magnitudes | ALHAMBRA | Reference | QSO | 0.743 (0.009) | 0.712 (0.020) | 0.727 (0.012) |
| GAL | 0.727 (0.016) | 0.743 (0.008) | 0.735 (0.009) | |||
| STA | 0.864 (0.005) | 0.884 (0.006) | 0.874 (0.004) | |||
| Magnitudes | ALHAMBRA | Optimal | QSO | 0.752 (0.008) | 0.706 (0.012) | 0.728 (0.009) |
| GAL | 0.730 (0.007) | 0.748 (0.012) | 0.738 (0.007) | |||
| STA | 0.850 (0.009) | 0.885 (0.007) | 0.867 (0.004) | |||
| Magnitudes | SDSS | Reference | QSO | 0.749 (0.008) | 0.701 (0.013) | 0.724 (0.010) |
| GAL | 0.695 (0.009) | 0.760 (0.011) | 0.726 (0.008) | |||
| STA | 0.867 (0.006) | 0.848 (0.007) | 0.858 (0.006) | |||
| Magnitudes | SDSS | Optimal | QSO | 0.757 (0.014) | 0.702 (0.015) | 0.728 (0.011) |
| GAL | 0.699 (0.011) | 0.758 (0.009) | 0.727 (0.009) | |||
| STA | 0.864 (0.007) | 0.859 (0.011) | 0.862 (0.007) | |||
| Colours | ALHAMBRA | Reference | QSO | 0.860 (0.007) | 0.839 (0.009) | 0.849 (0.005) |
| GAL | 0.847 (0.007) | 0.835 (0.009) | 0.841 (0.005) | |||
| STA | 0.923 (0.005) | 0.959 (0.004) | 0.941 (0.003) | |||
| Colours | ALHAMBRA | Optimal | QSO | 0.885 (0.006) | 0.881 (0.004) | 0.883 (0.002) |
| GAL | 0.885 (0.003) | 0.853 (0.007) | 0.869 (0.004) | |||
| STA | 0.928 (0.004) | 0.964 (0.005) | 0.945 (0.003) | |||
| Colours | SDSS | Reference | QSO | 0.750 (0.012) | 0.683 (0.012) | 0.715 (0.009) |
| GAL | 0.719 (0.008) | 0.775 (0.014) | 0.746 (0.008) | |||
| STA | 0.904 (0.003) | 0.922 (0.006) | 0.913 (0.004) | |||
| Colours | SDSS | Optimal | QSO | 0.763 (0.008) | 0.675 (0.012) | 0.716 (0.008) |
| GAL | 0.714 (0.008) | 0.773 (0.006) | 0.742 (0.004) | |||
| STA | 0.904 (0.003) | 0.942 (0.005) | 0.922 (0.003) | |||
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