Parallel coordinates plot for the 40 input configurations combining q × s (in log scale, first coordinate), c (second coordinate), standard deviation of the F₁ score (third coordinate), and median values of the F₁ score (fourth coordinate). Each configuration is color-coded according to the median F₁ score. All the configurations with log(q × s) ≳ 1.7 (q × s ≥ 50) (independently of the contrast value, c) lead to the largest median values of the F₁ score with the smallest values of the standard deviation of the F₁ score.