7.19.1
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Local Code Systems
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Error Handling
Reasoners

Maintaining consistency via reasoning

There is a way to verify if the newly created components are semantically valid and if they maintain the consistency and coherence of the ontology. The reasoner classifies the ontology by computing the hierarchical relationships between the concepts which are based on their semantic definitions.
Snow Owl includes the following reasoner:
Reasoner
Description
​ELK​
An ontology reasoner with the goal of supporting the OWL 2 EL profile. Remains the world's fastest SNOMED CT classifier and is Snow Owl's default. ELK supports numerical data types.
The reasoner set to default in the application preferences will be used for classification. In addition to the reasoners that are included with Snow Owl, it's also possible to install a different ProtΓ©gΓ© compatible reasoner. You can add a reasoner by copying the reasoner's ProtΓ©gΓ© jar to the dropins folder.
You can select the default reasoner in File > Preferences > Snow Owl > Reasoners.
New OWL API compliant reasoners can be added to Snow Owl in standalone mode by copying them into the dropins folder.
Reasonsers Preferences Page
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