Fig. 2.

Subsets of the HETDEX, EGS and Boötes PS1+WISE spectroscopic training sample identified as optically, X-ray selected, or infrared selected AGN. Details of the different selection criteria are outlined in the main text. The labelled sample sizes corresponding to a given region do not include subsets of that class, for example 309 corresponds to the sources are selected as X-ray AGN but do no pass any other criteria (rather than all X-ray selected sources).
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