Fig. 3

Sensitivity (%) at 10% estimated FDR for data sets S17, AURUM, and OMICS. Search engines Tandem, Mascot, and OMSSA are denoted T, M, and O; Peptide Prophet applied to Mascot results is denoted M^*; heuristic combiner is denoted H; supervised machine-learning classifiers (using fivefold cross validation) are denoted C-T through C-TMO; and unsupervised machine-learning combiner using fivefold cross validation and no cross validation are denoted U-TMO and U^*-TMO. Boxplots summarize 20 independent runs