Fig. 4.
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UMAP projection of embedded space, colour-coded by galaxy emission line properties and ionisation mechanisms. Top right: logarithm of the integrated EW of Hα. Top left: logarithm of the central [NII]/Hα ratio. Bottom left: logarithm of the central [OIII]/Hβ ratio. Bottom right: classification of galaxies according to their primary ionisation mechanism, categorised into AGN, Star-forming, LINERs, Passive, and Composite galaxies. Circles represent the training set, while stars denote the validation sample.
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