Fig. 4From: Protein-protein interaction extraction with feature selection by evaluating contribution levels of groups consisting of related features S-fold cross-validation (SFCV) performed on original training data. Original training data T r a i n all was divided into S equal-sized partitions P i (i=0,⋯,S−1) to perform SFCV on it to estimate contribution levels of four groups, G 1, G 2, G 3, and G 4, and perform feature selectionBack to article page