Comparison between the true M_⋆ as given by the CIGALE output, and the best-fit models of Eq. (6) (MC; Table 3), and the random forest machine learning method (RF) using the WISE band-1 and the u − r color. The y-axis represents the logarithm of the ratio between the M_⋆ of each model and the true M_⋆, thus the black dashed line at zero represents equality. Blue and red colors show the extinction-independent, and extinction-dependent relation of Eq. (6) respectively. With light-blue and orange colors are the extinction-independent, and extinction-dependent models based on the RF method respectively. The M_⋆ calculated based on the mass-to-light conversion from Wen et al. (2013) is also shown with green color. The lines represent the distribution modes and the shaded areas the 68% percentiles as a function of the log M_{⋆ true}. Each panel shows the comparison of galaxy models with one of the discrete E(B − V) values, shown in the bottom left corner of each panel. This comparison is performed with the uniform-E(B − V) sample, therefore, there is an equal number of sources for each extinction value. At the bottom of each panel are the modes and 68% percentiles of the log M_⋆model/M_⋆, True distribution for all galaxy models with the specific E(B − V), shown with corresponding colors to the relations used to derive the M_⋆. These comparisons are also summarized in Table 4.