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. 2013 Feb 27;13:2. doi: 10.1186/1472-6807-13-2

Table 1.

The specificity and sensitivity for the top 1 template and the best template among the top 5 templates for each tool based on 107 CASP9 targets and the number of targets that have templates identified for each tool

Tool
The top 1 model
The best model
# targets that have templates identified
  Specificity Sensitivity Specificity Sensitivity  
PSI-BLAST-multi
80.28%
53.27%
88.73%
58.88%
71
CS-BLAST
73.97%
50.47%
78.08%
53.27%
73
CENTER
67.29%
67.29%
71.96%
71.96%
107
STAR
67.29%
67.29%
71.96%
71.96%
107
HMMER
66.67%
56.07%
77.78%
65.42%
90
SS
66.04%
65.42%
71.96%
71.96%
107
HHSearch
65.42%
65.42%
72.90%
72.90%
107
BLAST
65.38%
47.66%
69.23%
50.47%
78
CSI-BLAST
62.63%
57.94%
66.67%
61.68%
99
COMPASS
62.50%
60.75%
71.15%
69.16%
104
PSI-BLAST-single
62.50%
56.07%
67.71%
60.75%
96
PRC
62.14%
59.81%
69.90%
67.29%
103
SAM
61.32%
60.75%
67.92%
67.29%
106
CONSTRUCT 60.75% 60.75% 71.96% 71.96% 107

The specificity is the fraction of the targets with at least one template identified by a method having a GDT-TS score > = 0.5, i.e. the number of targets for which a good template is identified divided by the number of targets for which at least one template is identified. The specificity measures the precision of template identification of a method. The sensitivity is the number of targets for which a good template (i.e. its GDT-TS score >0.5) is identified divided by all the targets in consideration in this experiment (i.e. 107), assuming that all the targets have at least one reasonable template. The two measures (i.e. sensitivity and specificity) are complementary.