Multiplicative ( μ_i) and additive (c_i) bias parameters characterizing the ĝ_i point estimates, for the fiducial experiment, as function of galaxy parameters. The four panels visualize the dependence of these bias terms on the average S/N per case, the true half-light radius R, the Sérsic index, and the intrinsic ellipticity ε of the galaxies. In each panel, the μ_i and c_i are shown respectively with solid and dotted lines, in black for the first component, in red for the second (see legend). The bin limits of source galaxy parameters divide the population into quantiles and are indicated with light vertical lines, except for the Sérsic index, which follows a discrete distribution. The parameters are shown on a linear scale within the shaded area, and using a logarithmic scale outside of this region. Error bars depict 1σ uncertainties originating from the validation set. In addition, the training itself introduces some noise, so that details of these curves vary depending on the realization of the training set, without changing the qualitative observations discussed in the text.