KNN classification and hybrid decision-tree photo-z methods applied to DES DR2 cross-matched with SDSS yield a quasar catalog spanning z~0.5 to >3.
Kessler et al.,Results from the dark energy survey supernova program,The Astronomical Journal150(2015) 172
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Photometric classification of quasars from DES and photo-$z$ estimation with Machine Learning
KNN classification and hybrid decision-tree photo-z methods applied to DES DR2 cross-matched with SDSS yield a quasar catalog spanning z~0.5 to >3.