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. Author manuscript; available in PMC: 2018 Jan 1.
Published in final edited form as: Ann N Y Acad Sci. 2016 Oct 17;1387(1):12–24. doi: 10.1111/nyas.13225

Figure 3.

Figure 3

(A) Excerpt of 11 concepts from the SNOMED CT Intracranial hemorrhage subhierarchy. (B) Area taxonomy for A. (C) Partial-area taxonomy for A. The area taxonomy and partial-area taxonomy are constructed as follows: each area summarizes all concepts with the same set of outgoing relationship types. An area taxonomy is an abstraction network composed of area nodes connected by child-of links based on the IS-A relationships in the ontology. A root of an area is a concept that has no parents in its area (e.g., Perinatal intracranial hemorrhage). An area may have multiple roots. A partial-area consists of a root concept and all of its descendants in its area. Partial-areas summarize semantically similar concepts within each area, since all are descendants of the same root.