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[bioontology-support] ontology mappings

John Graybeal jgraybeal at
Tue Feb 13 14:11:03 PST 2018

On the perhaps-broader subject of how to put mappings for an ontology into BioPortal, the answer is 'via the API'. (If you have just a few, you can do so via the UI at .)

Example code for creating API mappings is at

A past thread on how to do this is at
It mentions the general info on running the above sample code:

Links that might be useful:    -- the actual API documentation

Sorry we do not have more better documentation!


On Feb 13, 2018, at 11:00 AM, Clement Jonquet <jonquet.lirmm at<mailto:jonquet.lirmm at>> wrote:

Hi Michel,

NCBO and us do not have a lot of documentation about mappings. A small technical explanation is here:

On the "recognized’’ point:
BioPortal does not automatically extract/recognize mappings that would be in described inside the ontologies. Except if the class explicitly uses the same URI or has a CUI property described properly (as documented in the link).

If an ontology file contains "mappings" represented with SKOS matching properties or owl:sameAs or any other specific property (e.g., OBO-XREF), those mappings will not be extracted by AgroPortal.

It sounds weird, but there are multiple historical reasons for this including the fact that at the beginning of the NCBO project, one would not always expect the mapped ontologies to be « already » in BioPortal. This situation is not always true, but now there is a strong chance  the mapped ontologies are already on BioPortal.
Within AgroPortal we removed that constraint a couple of years ago (external mappings) and will start soon working (again) on mappings with Elcio (CC) who just join us at LIRMM.

As of now, I would recommend to use SKOS properties inside you SIO file to represent mappings. Those would be considered by the new parser for sure.


Le 13 févr. 2018 à 00:59, Michel Dumontier <michel.dumontier at<mailto:michel.dumontier at>> a écrit :

  Can you point me to public documentation that describes how my ontology (SIO) can be annotated with mappings that can be recognized by the BioPortal system?

Michel Dumontier
Distinguished Professor of Data Science
Maastricht University<>
bioontology-support mailing list
bioontology-support at<mailto:bioontology-support at>

bioontology-support mailing list
bioontology-support at<mailto:bioontology-support at>

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

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