Fig. 1.

Box-whisker plots of the performance for each problem in the eTUMOUR dataset (based on the detailed list of results included in Sect. 1 of the on-line Supplementary Material). Performance is measured in BER. The box indicates the region between the lower (X _0.25) and the upper (X _0.75) quartiles. The horizontal line inside the box indicates the median of the distribution, and the vertical lines (the “whiskers”) extend to at most 1.5 times the box width. Any outlier of the distribution is displayed with a cross