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[bioontology-support] Questions about displaying ontology structure

John Graybeal jgraybeal at
Sat Mar 24 14:31:13 PDT 2018


To my understanding, they are not ordered. As you probably know the processing of ontology statements in an OWL file does not produce a defined ordering of results, and we do not attempt to order them in any particular way when they are output within these tables. There may be a pattern of the result, but if so it is not defined by us.

Should any of our BioPortal experts find fault with this answer, we will send an update. But I think you can find similar answers in previous email threads on the list.


On Mar 23, 2018, at 10:07 AM, Claudia Knobloch <claudia.knobloch at<mailto:claudia.knobloch at>> wrote:


I currently try to analyze how a node is displayed within the ontology browser.  I need to understand if there is an sorting of the subClassOf entries .

For example -
This node has two "parent" nodes:

  *   Pinna finding -

  *   Bleeding -

Not matter when I open the ontology browser, the "parent" node Pinna finding is always the first. I have access to a ttl-file of SNOMEDCT I see no hint within the file why that "parent" node is always first.

Do you know if the "parent" nodes are sorted? If yes, do you know how I can identify within the ttl-file the sorting? If no, do you know why one "parent node is always first? Thank you very much.

Kind regards
Claudia Knobloch

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John Graybeal
Technical Program Manager
Center for Expanded Data Annotation and Retrieval /+/ NCBO BioPortal
Stanford Center for Biomedical Informatics Research

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