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Table 2 Statistical analysis of attributes chosen by the feature selection methods for the four organisms. Four attributes (PEPIB, CAI, N30 disorder, and G + C content) out of the 21 appeared in at least three of the four organisms tested. Actual values for all attributes are given in Additional file 1)

From: Computational approach to predict species-specific type III secretion system (T3SS) effectors using single and multiple genomes

Organism Attribute Positive set Negative set
Average SDb Average SD
E. coli Non-Polar 48.67 8.89 58.42 10.70
PEPIB 0.86 0.07 0.77 0.14
CAI 0.58 0.02 0.71 0.06
N30 disorder 0.53 0.11 0.38 0.13
P. syringae Tiny 41.11 9.45 30.32 9.09
Chargea 0.93 1.25 0.60 2.40
pIa 7.74 1.42 6.71 1.76
PEPIB 0.90 0.11 0.74 0.16
Aliphatic index 61.19 18.33 100.96 32.15
CAI 0.51 0.06 0.68 0.07
G + C content 51.62 5.77 59.04 3.91
N30 disorder 0.67 0.07 0.41 0.14
S. dysenteriae Non-Polar 45.11 9.07 56.09 10.11
Tinya 24.22 10.87 29.16 9.29
G + C content 34.62 1.80 51.65 3.70
N30 disorder 0.47 0.12 0.22 0.13
S. Typhimurium PEPIB 0.88 0.12 0.74 0.21
Instability index 65.21 22.55 38.43 22.54
CAI 0.58 0.04 0.69 0.05
G + C content 43.99 6.18 52.18 5.74
  1. aAttributes that are not statistically different between the positive and negative sets
  2. b SD standard deviation