Precision–recall curve with median filters of different kernel sizes. The three batches show all flare events from the test data (left), and cases with flares in which the highest point compared to the noise in the light curve is above 3σ (middle) and 5σ (right). The color coding shows different cutoff levels above which a flux measurement is considered to be a flare. The darker the color the higher the cutoff threshold. The point marks the location of a cutoff value of 0.2 for the 47-point-width median filtered case. See text for details.