The ROC curves for different models. In this figure, the ROC curves for different SVM models are presented. The gray curve is generated using models to discriminate interface from non-interface residues. The red, blue, and pink curves are generated using models to discriminate core interface from other residues. The core cut-offs for red, blue, and pink curves are 0.2, 0.5, and 0.8 respectively. The AUC for the gray, red, blue, and pink curves are 0.7385, 0.7498, 0.8184, and 0.9169 respectively.