Classification of the candidates with a spectroscopic counterpart by our ANN algorithm. The solid light-teal histogram represents the full spectroscopic sample, and the solid dark blue the subsample classified as LAE by the NN. The empty brown and green histograms represent the candidates classified as contaminant QSOs and low-z galaxies, respectively. For our target redshift range (z ≳ 2.75), the algorithm correctly classifies most objects (∼90% completeness). The red dotted vertical line marks the minimum redshift targeted by the NB with the lowest wavelength (z = 2.7, NB455).