Feature importance of the five features from the Best₁₀ set composed by magnitudes from neighbouring bands. As in Fig. 7, for a sliding redshift bin of Δz = 0.2, the importance of every feature was calculated. The results are compared to the classic features using model magnitudes of the same bands. Based on the characteristics of the ugriz filters, the wavelengths indicating the start, centre, and end of the overlapping regions are used to overplot the positions of particular quasar emission lines using Eq. (2). The used colour code is the same as in Fig. 3, while corresponding features of the Classic₁₀ set are always shown in grey.