Redshift distributions of the complete DEEP2 data inferred from the baseline CNN trained on the COSMOS UDF sample alone (v0, blue histograms) and on the COSMOS UDF data supplemented by the DEEP2 spectroscopic data (v1, pink histograms). The distributions are compared to the ugrizy SED-fitting redshift distributions (green histograms) and to the COSMOS UDF training distributions (shaded gray histograms). All are normalized to 1. The white histograms are the redshift distributions of the DEEP2 spectroscopic sources included in the training set, arbitrarily scaled for visibility. The numbers of DEEP2 galaxies and COSMOS UDF training galaxies and the fraction of DEEP2 training galaxies with respect to the latter are quoted in black, gray, and white on gray, respectively, in each magnitude range.