Table 3

Comparison of the six algorithms, using the microarray hybridization data from the Sakai sequenced strain. The result of using each algorithm were compared to BLASTN data and are shown below.


Cut-off
TP
FP
TN
FN
Sensitivity
Specificity
M-Score


0.50
5285
2
416
41
99.23
99.52
99.25
Naïve
0.33
5297
6
412
29
99.45
98.56
99.39
cut-off
0.25
5302
8
410
24
99.55
98.09
99.44

0.20
5308
12
406
18
99.66
97.13
99.48

0.10
5316
64
354
10
99.81
84.69
98.71

GENCOM*

5238
2
416
88
98.34
99.52
98.43

GACK**
EPP = 50
5137
1
417
189
96.45
99.76
96.69

EPP= 0
5261
1
417
65
98.78
99.76
98.85

Prowollik

5277
1
417
49
99.07
98.76
99.13

MKD***

5297
6
412
29
99.45
98.56
99.39

Mixture
Bimodal
5296
8
413
30
99.44
98.80
99.39

Trimodal
5244
1
417
82
98.46
99.76
98.55

The number of genes estimated as correctly conserved (True positives, TP), genes identified as conserved but actually are variable (false positives, FP), genes identified as correctly variable (true negatives TN), and genes identified falsely as variable (false negative FN), are given. The sensitivity, specificity, and M-Score are also calculated, where the sensitivity = TP/(TP+FP), specificity = TN/(FP+TN), and M-Score = Sensitivity*prevalence + Specificity*(1-prevalence)

* Institute of Food Research method (GENCOM)

** Genotyping Analysis by Charlie Kim method (GACK)

*** Minimum Kernel Density method (MKD)

Carter et al. BMC Genomics 2008 9:53   doi:10.1186/1471-2164-9-53