Fig. 3From: Protein-protein interaction extraction with feature selection by evaluating contribution levels of groups consisting of related featuresOutline of PPI prediction based on division of training set. Training set was divided into subsets, A, B, and C, based on existence of significant keyword and feature position of keyword. Three classifiers were generated from every subset. Similarly, unlabeled instances were divided into one of three subsets, A’, B’, and C’, and corresponding classifier was used to identify whether PPIs exist in these instancesBack to article page