Table 1.
Constitution of a sample set.
| Catalog | Star | Galaxy | QSO | Total |
|---|---|---|---|---|
| SDSS DR16 | 45 350 | 68 381 | 44 745 | 158 476 |
| SDSS APOGEE | 13 749 | 0 | 0 | 13 749 |
| LAMOST DR7 | 299 907 | 16 004 | 4758 | 345 975 |
| LAMOST A-, F-, G- and K- type stars | 212 114 | 0 | 0 | 212 114 |
| LAMOST A- stars | 5145 | 0 | 0 | 5145 |
| LAMOST M- stars | 25 604 | 0 | 0 | 25 604 |
| VV13 | 0 | 0 | 4744 | 4744 |
Notes. The numbers reveal how many objects there are that correspond to each catalog and class, after crossing with the J-PLUS catalog. The sample contains 468 685 objects with a full 12 mag from the catalogs, with 348 085 STAR, 74 701 GALAXY, and 45 899 QSO objects. There are repeated objects in different catalogs, which cause the inequality of the sum. This table presents all objects for training and testing. See Sect. 3.3.2 for a blind test.
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