t-SNE visualization of the catalog feature space. Left panel: datapoints with SDSS labels from the training set (green and light and dark blue) together with those from the inference sample without training coverage (pink). Right panel: results of applying magnitude and color cuts on the inference sample. The darkest color shows objects removed by both r <  22 and u − g >  0 criteria simultaneously, colors in between stand for objects removed by only one of those cuts, and the lightest points are left after the cuts.