Mass distribution histogram of the polluting AGB stars based on Monash models. Here we used element set A (all elements except Nb). Each star is counted in bins in the range of the classified minimum and maximum masses. Different colours indicate the models of different classifiers. The bin width is 0.25 M_⊙. The dashed line labelled ‘Intersection’ shows the histogram for stars classified in the same bin by at least two of the classifiers.