Classification ROC curve. ROC curves of 104-fold binomial simple logistic classifiers on all the 52 riboswitch sequences and their antisense sequences. classifier features shown in legend. WekaⒸopen source software package used to assess probability distributions. Resolution (0.01) was used to calculate true and false positive rates. Corresponding threshold for a given false positive rate was used to calculate the true positive rate. Values strictly higher than threshold were used to calculate true positive rates.