Fraction of sources (y-axis) whose probabilities of the accepted classes are lower than a certain probability (x-axis) for the Hipparcos periodic variables (left panel) and the OGLE/EROS-2 validation test-set, T₂ (see Sect. 2.3), (right panel). The correctly classified sources (solid line) have generally higher probability than other two groups, each of which is 1) the misclassified sources (dashed line), and 2) the sources whose variability types are not in the training set (dotted line).