Fig. 4.

Prediction reliability versus capsule length. (A) Precision versus positive capsule length. (B) FDR versus negative capsule length. The x-axis represents the center of each length-bin of the positive/negative capsule in PTMCaps. The y-axis represents the precision/FDR of the corresponding bin. The circles and the bars represent the average precision/FDR and the SD, respectively, for a given capsule length bin from 10-fold cross-validation results. The dashed line represents the non-linear (quadratic) regression of the precision/FDR from a capsule length, which can be used to estimate the prediction reliability for a PTM of interest [Equations (3)–(4)]