Fig. 4.
Comparison of spectroscopic redshift distributions of the un- weighted training set (red) and after applying the kNN weights to it (blue). The weights were derived with reference to the KiDS DR3 FIDUCIAL dataset, and subsequently used in ANNz2 training and eval- uation for the public KiDS DR3 photo-z data release. Histograms are normalised to unit area.
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