UMAP representation colour-coded as a function of the bolometric luminosity and the resulting spectra decoded from the latent space point in the direction of evolution. Left panel: UMAP embedding; the points on which we applied the inverse UMAP transformation are highlighted as scatter points and are colour-coded using the average neighbouring colour. Right panel: Spectra decoded from latent space samples highlighted in the left panel and colour-coded according to the respective originating scatter point.