Ontology
|
\({\bar{E}}_{C}\)
|
\(\widehat{k{\bar{E}}^2_{C}}\)
\(({\mu }s)\)
|
\({\bar{E}}^2_{C}/{\bar{E}}^2_{WN}\)
|
\(\widehat{{\bar{E}}^2_{C}/{\bar{E}}^2_{WN}}\)
|
---|
SNOMED-CT
|
72.02
|
1.191
|
7.79
|
5.39
|
GO
|
31.14
|
0.3277
|
1.46
|
1.48
|
WordNet (WN)
|
25.80
|
0.2210
|
1
|
1
|
- First column shows the average number of adjacent nodes per ancestor set for each node in ontology C, denoted by \({\bar{E}}_{C}\). Second column shows the estimated value for the factor \(k{\bar{E}}^2_{C}\) in \(TC_3\) obtained by fitting the scalability plot shown in Fig. 3 to the line \(t_{{\mu }s} = \alpha + (k{\bar{E}}^2_{C})N\). Then, third and fourth columns compare the theoretical and experimental expected ratios between the time complexity (slope) of two different ontologies using WordNet (WN) as baseline