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I wrote a simple ontology to do some simple test for my project but when i display the graph of the ontology using OntoGraph provided in Protégé GUI i automatically get strange associations:

I get this : (the code is linked at the end of message)

-Thing -- has Sub class --> snomed_title_e

-Thing -- has sub class --> icd_title_e

Why??

ThE OWL file and a snapshot of the graph are here

Francesco Talin
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1 Answers1

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owl:Thing is the root of all class hierarchies in OWL, that's why it's being shown. I don't know if there is an option to exclude it from the visualisation.

Ignazio
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  • Thanks for your answer Ignazio but the question is why protegè (in Ontograph) makes a direct association between thing and, in this case, only snomed_title_e and icd_title_e. If you want the answer can be viewed also as <>. It's a bug of ontoGraph? It's a stupid error that i made defining this test file? – Francesco Talin Oct 29 '14 at 08:47