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Table 1 The performances of self-consistency, Jack-knife validation and n -fold (4-, 6-, 8-, 10-fold in this work) cross-validation for four well-studied PKs of PKA, CK2, ATM and S6K. The n- fold cross-validation has been performed for the large data sets (N ≥ 30).

From: PPSP: prediction of PK-specific phosphorylation site with Bayesian decision theory

PPSP PKA CK2 ATM S6K
   Sn(%) Sp(%) Sn(%) Sp(%) Sn(%) Sp(%) Sn(%) Sp(%)
Self-consistency 90.11 91.70 83.21 90.01 93.02 94.06 92.85 97.97
Jack-knife 90.11 90.46 83.21 88.44 86.05 91.89 92.86 91.05
  4- 90.11 90.43 81.02 87.90 86.37 90.14 N/A N/A
n -fold cross-validation 6- 90.11 90.52 81.02 88.34 86.37 90.60 N/A N/A
  8- 90.11 90.45 81.75 88.48 86.05 90.65 N/A N/A
  10- 90.11 90.48 81.75 88.22 86.05 91.39 N/A N/A
Data set (No.) Positive 173 142 43 14
  Negative 8, 408 5, 332 2, 048 683