Table 1 General metrics on the three extracted modules of SNOMED-CT
From: Analysing Syntactic Regularities and Irregularities in SNOMED-CT
Present and absent | Chronic findings | Acute findings | ||
|---|---|---|---|---|
clinical findings | ||||
Target entities | Classes whose labels | Classes whose labels | Classes whose labels | |
have the keywords | have the keywords | have the keywords | ||
“present” or “absent” | “chronic” | “acute” | ||
Axioms | 5 065 | 20 688 | 19 812 | |
Classes | 1 687 | 6 842 | 6 599 | |
Object properties | 16 | 25 | 25 | |
Mean class hierarchy depth | 9.76 | 11.2 | 10.09 |