Fig. 4

Histograms of k-means scores from the training set for the two classes, represented as black and red distributions (top row); reliability diagrams for the BBQ method (middle row), and for the proposed method (bottom row). For comparison, the training distributions are generated using both LOO (blue) and 10-fold cross validation (green). Those data sets with large overlaps between the predicted values from the two classes are boxed for emphasis. Note the systematically larger granularity in those (boxed) data sets with larger overlaps in the ML scores