Fig. 4

Influences of the free parameters on the performance of the MLE and PE approaches. Horizontally, Subplots a-c illustrate the influences of false positive rate (fp) and false negative rate (fn) on AUC, accuracy and the mean rank ratio of the of the MLE approach; Subplots d-f illustrate the influences of reliable rate (r) and pw threshold on AUC, accuracy and the mean rank ratio of the PE approach. Vertically, Subplots a and d illustrate AUC scores; Subplots B and E illustrate accuracies; Subplots C and F illustrate mean rank ratios, respectively