Dependence of the completeness (upper panels) and purity (lower panels) on the number of parameters used for SVM training of a sample with W1 < 14 mag and I₁₀₀< 1 [MJy/sr], for the self-check (left panels) and the cross-test (right panels) cases. The specific classification parameters for the training were W1 (1st), W1−W2 (2nd), w1mag_1−w1mag_3 (3rd), and apparent motions (4th). See text for details. Relevant contamination levels are 100%−Purity.