Performance of sub-networks and final cascade-network.

aSequence separation: if value is s, then only contacts between pairs minimally s residues apart are considered, that is .bLength Range of protein sequence of corresponding sub-network training and testing data sets.cMinimal prediction value to determine residues contact or not.dSize of test data set for each sub-network.eAcc: prediction accuracy(%), defined in equation (1) and Cov: coverage(%), defined in equation (2).fStandard error.