Model training: supervised vs. unsupervised. The figure gives a comparison of some response estimates. The first two are both unsupervisedly trained, with A and T unknown, from the PDNN model , and the probe selection model (PSM) , respectively. The WAM estimate is obtained by estimating A(with T known) from our model (7); a robust median estimate (the median of the ratios of Y to FGT) is also plotted. Note that the first two deviate from the last two which are trained in a supervised manner.