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Table 2 Classification Matrix for ROC/PR Evaluation

From: Reconstructing nonlinear dynamic models of gene regulation using stochastic sampling

   positive link negative link non-existent link
  positive link TP FP FN
actual negative link FP TP FN
  non-existent link FP FP TN
  1. Mapping of three-class classification problem (no edge present, positive regulation, negative regulation) onto two-class ROC/PR evaluation. TP: True Positive, TN: True Negative, FP: False Positive, FN: False Negative.