Table 3.
Confusion matrix values for the various RF classifiers tested in the gri bands.
| Band | LS | features | TPR | TNR | accuracy | precision | F1 | unobscured AGN | obscured AGN | X-ray | MIR | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (recall) | recall | recall | recall | recall | ||||||||
| g | spec-MIR | all | 81.6 ± 0.2 | 98.18 ± 0.16 | 95.42 ± 0.14 | 89.9 ± 0.8 | 85.6 ± 0.4 | 99.7 ± 0.2 | 53.2 ± 0.6 | 85.7 ± 0.3 | 88.2 ± 0.4 | |
| I | r | spec-MIR | all | 79.3 ± 0.8 | 98.74 ± 0.15 | 95.52 ± 0.15 | 92.6 ± 0.8 | 85.5 ± 0.5 | 99.00 ± 0.15 | 50.1 ± 1.5 | 84.2 ± 0.5 | 86.4 ± 1.0 |
| i | spec-MIR | all | 79.2 ± 0.6 | 98.03 ± 0.10 | 94.90 ± 0.16 | 88.9 ± 0.5 | 83.8 ± 0.5 | 99.2 ± 0.2 | 46.4 ± 1.5 | 83.2 ± 0.6 | 87.9 ± 0.7 | |
| g | main | all | 74.8 ± 0.4 | 95.72 ± 0.15 | 91.03 ± 0.11 | 83.5 ± 0.4 | 78.7 ± 0.2 | 99.5 ± 0.0 | 73.5 ± 1.8 | 76.3 ± 0.4 | 89.2 ± 0.3 | |
| II | r | main | all | 74.3 ± 0.5 | 96.4 ± 0.2 | 91.4 ± 0.2 | 85.7 ± 0.7 | 79.4 ± 0.5 | 99.6 ± 0.2 | 71 ± 2 | 76.2 ± 0.5 | 89.5 ± 0.6 |
| i | main | all | 74.9 ± 0.9 | 95.0 ± 0.2 | 90.5 ± 0.2 | 81.4 ± 0.6 | 77.8 ± 0.6 | 99.6 ± 0.2 | 72.8 ± 1.9 | 76.3 ± 0.9 | 91.5 ± 0.6 | |
| g | main | var. features only | 47.69 ± 0.18 | 98.28 ± 0.14 | 86.92 ± 0.13 | 88.9 ± 0.8 | 62.1 ± 0.3 | 92.30 ± 0.15 | 29.2 ± 0.0 | 51.6 ± 0.2 | 66.45 ± 0.16 | |
| III | r | main | var. features only | 51.6 ± 0.2 | 99.31 ± 0.07 | 88.60 ± 0.07 | 95.6 ± 0.4 | 67.0 ± 0.2 | 97.0 ± 0.2 | 37.4 ± 0.3 | 55.6 ± 0.2 | 70.9 ± 0.0 |
| i | main | var. features only | 47.0 ± 0.5 | 95.5 ± 0.3 | 84.6 ± 0.3 | 75.3 ± 1.3 | 57.8 ± 0.6 | 88.3 ± 0.7 | 24.5 ± 1.1 | 49.5 ± 0.5 | 69.5 ± 1.0 | |
| IV | – | main | uBrizy-derived colors only | 73.8 ± 0.3 | 89.1 ± 0.3 | 85.7 ± 0.2 | 66.3 ± 0.6 | 69.9 ± 0.4 | 96.0 ± 0.3 | 64.6 ± 1.0 | 75.9 ± 0.4 | 82.7 ± 0.6 |
| – | main | all colors only | 76.0 ± 0.8 | 93.8 ± 0.2 | 89.8 ± 0.3 | 78.1 ± 0.7 | 77.0 ± 0.7 | 99.3 ± 0.3 | 68 ± 3 | 76.6 ± 0.9 | 93.3 ± 0.5 | |
| g | main | 13, optimized for obscured AGN sel. | 77.8 ± 0.8 | 94.76 ± 0.14 | 90.96 ± 0.15 | 81.1 ± 0.4 | 79.5 ± 0.4 | 99.95 ± 0.15 | 81 ± 2 | 79.2 ± 0.7 | 91.8 ± 0.6 | |
| V | r | main | 14, optimized for obscured AGN sel. | 76.7 ± 0.6 | 95.7 ± 0.2 | 91.4 ± 0.2 | 83.7 ± 0.7 | 80.0 ± 0.5 | 99.5 ± 0.0 | 79.0 ± 1.8 | 78.±0.7 | 90.0 ± 0.3 |
| i | main | 10, optimized for obscured AGN sel. | 80.1 ± 0.2 | 94.72 ± 0.17 | 91.42 ± 0.14 | 81.4 ± 0.5 | 80.7 ± 0.3 | 99.5 ± 0.0 | 84.3 ± 0.9 | 81.1 ± 0.2 | 93.3 ± 0.2 | |
Notes. The table reports information about the band, LS, and features used for each test, as well as true positive rate (TPR), true negative rate (TNR), accuracy, overall precision values, F1, and recall for unobscured and obscured AGN, X-ray AGN, and MIR AGN. The overall value of the recall is by definition the same as the TPR. Sections I and II report the results obtained using the two different LSs adopted in this work. Sections III and IV report the results from the tests where only variability features or only colors are used, respectively, which will be discussed in Section 4. Section V is focused on the selection of obscured AGN (see also Table 5), which will be discussed in Section 5. All values are to be read as percent values. The percentage errors represent the standard deviation from the mean value derived from a set of ten experiments per classifier. The Roman numerals in the leftmost column help identify the various sections of the table throughout this work.
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