Gaia XP spectra sensitivity maps of CNN. In the top panel, we show a correlation matrix shown as a heat map between the 55 BP XP coefficients and labels in the training sample. The colour bar shows the strength of the (anti-)correlation, where green in the middle (zero value) represents no linear relationship between the labels and XP coefficients. The second panel shows the mean gradients of BP XP coefficients (δlabel/δXP) as a function of the 55 BP XP coefficients for the training sample. The third and fourth panels depict the heat map and gradients for the RP XP coefficients (i.e. the red part of XP spectra).