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IFS curve for discriminating HBPs from non-HBPs. When the top 73 dipeptides were used to perform prediction, the overall success rate (Red dot) reaches an IFS peak of 84.9% in jackknife cross-validation. Another IFS peak (Blue dot) is observed when the abscissa is 86 (namely, 86 features). The green dot denotes the results obtained with 20 features.
