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Does SNOMED CT post-coordination scale?
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SNOMED CT is a compositional terminology. Construction of post-coordinated expressions allows users to specify new meaning by referencing existing SNOMED CT concepts. The use of post-coordinated expressions in information systems requires special software, a reasoner, to give the exact relations between post-coordinated expressions and existing SNOMED CT content. Thus, the performance characteristics of reasoners are important for implementation of post-coordination in information systems. This study aims to test how reasoners perform when a large number of post-coordinated expressions are added to SNOMED CT. The time needed to classify an ontology consisting of SNOMED CT plus an increasing number of post-coordinated expressions is measured. The best performing reasoner in this test classifies SNOMED CT plus 1 million post-coordinated expressions in 42 seconds. The time to classify grows a little less than quadratic as the size of the ontology increases. In conclusion, classification time is not a problem using current reasoners and current SNOMED CT releases even if a large number of post-coordinated expressions are added.
Title: Does SNOMED CT post-coordination scale?
Description:
SNOMED CT is a compositional terminology.
Construction of post-coordinated expressions allows users to specify new meaning by referencing existing SNOMED CT concepts.
The use of post-coordinated expressions in information systems requires special software, a reasoner, to give the exact relations between post-coordinated expressions and existing SNOMED CT content.
Thus, the performance characteristics of reasoners are important for implementation of post-coordination in information systems.
This study aims to test how reasoners perform when a large number of post-coordinated expressions are added to SNOMED CT.
The time needed to classify an ontology consisting of SNOMED CT plus an increasing number of post-coordinated expressions is measured.
The best performing reasoner in this test classifies SNOMED CT plus 1 million post-coordinated expressions in 42 seconds.
The time to classify grows a little less than quadratic as the size of the ontology increases.
In conclusion, classification time is not a problem using current reasoners and current SNOMED CT releases even if a large number of post-coordinated expressions are added.
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