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Table 3 Descriptive statistics for Ω and Z scores for the DS362 dataset

From: Exploring protein structural dissimilarity to facilitate structure classification

SCOP Level SD SD Norm VMR CE TPR FPR
  Z Ω Z Ω Z Ω Z Ω Z Ω Z Ω
Class 0.75 0.17 0.07 0.12 0.21 0.03 0.27 0.19 0.88 0.87 0.31 0.35
Fold 1.62 0.14 0.16 0.09 0.70 0.03 0.43 0.18 0.75 0.69 0.74 0.46
Super-family 0.93 0.16 0.10 0.10 0.24 0.04 0.26 0.22 0.74 0.70 0.35 0.34
Family 2.21 0.18 0.22 0.11 0.78 0.09 0.35 0.46 0.17 0.81 0.00 0.07
  1. Statistics for Ω and Z scores for the protein pairs sharing a common SCOP level. The true positive rates (TPR) and false positive rates (FPR) are calculated based on the threshold range derived from the respective normalised Mean ± SD. Variance to Mean Ratio (VMR) and Coefficient of Error (CE) statistics give an estimate of how general the thresholds could be and how accurate the suggested thresholds are, respectively. Bold-face type indicates where Ω performs better than Z score in assigning pairs to a common Fold and Family. SD Norm = normalised standard deviation.