Stacked line-profile reconstruction example in mock Lyα line profiles using the Lyα line profiles with redshift dependence. The stacked line profile is shown the redshift intervals [0.75,1.25] (grey), [1.75,2.25] (blue), [2.75,3.25] (green), [3.75,4.25] (yellow), and [4.75,5.25] (red). The Lyα stacked line profiles using the Lyα line profiles before applying the IGM absorption are displayed in the top left panel. The two top right panels display the Lyα stacked line profile after applying the IGM absorption and mocking observation qualities similar to those of HST (W_g=0.1 Å and S/N_p = 15.0, top) and MUSE (W_g = 2.0 Å and S/N_p = 10.0, bottom). The six bottom panels show the reconstructed stacked Lyα line profiles. Each bottom column makes use of a different ANN model: IGM+z, IGM-z, and NoIGM from left to right. The KS between the stacked Lyα line profile before the IGM (left column) and that of the reconstructed Lyα line profiles is displayed in coloured text matching the redshift bin.