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Table 4 Density prediction accuracy (KL divergence) for structurally ambivalent residues. Average KL divergence of prediction of continuum secondary structure for residues that have a structural ambivalence equal to or exceeding an entropy of 0.0 (all residues), 0.3 and 0.5. "CV": average (standard error) of five randomized repeats of 10-fold cross-validation on the training set (set-174). "test": average error on the test dataset (set-286).

From: Prediction of protein continuum secondary structure with probabilistic models based on NMR solved structures

problem model entropy ≥ 0.0 entropy ≥ 0.3 entropy ≥ 0.5
   CV test CV test CV test
3-class PNN 0.49 (0.002) 0.52 0.53 (0.002) 0.59 0.52 (0.003) 0.54
  CPNN 0.47 (0.002) 0.50 0.53 (0.003) 0.57 0.53 (0.003) 0.53
  CCNN 0.48 (0.002) 0.51 0.58 (0.002) 0.62 0.59 (0.004) 0.58
8-class PNN 0.88 (0.001) 1.01 1.07 (0.003) 1.26 1.07 (0.004) 1.13
  CPNN 0.84 (0.002) 0.98 1.03 (0.004) 1.22 0.98 (0.008) 1.15
  CCNN 0.87 (0.003) 0.99 1.12 (0.004) 1.31 1.10 (0.010) 1.24