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[protege-discussion] Referring to classes outside an ontology

Matthew Horridge matthew.horridge at
Tue Oct 16 16:59:14 PDT 2012

Hi Joachim,

This seems o.k. to me.  (Providing faldo;Region expands to the full IRI of the class in the external ontology).  The light font-weight (as opposed to bold) indicates that you haven't said anything about the class in the current ontology.  



On 16 Oct 2012, at 16:39, Joachim Baran wrote:

> Hello,
>  I would just like to hear some feedback whether my approach of integrating classes outside of my own ontology is correct.
>  I added the following snippet to my ontology, where I basically want to express that the range of my "region" object property is an instance of the "Region" class from the FALDO ontology.
>    <owl:ObjectProperty rdf:about="">
>        <rdfs:label>region</rdfs:label>
>        <rdfs:domain rdf:resource=""/>
>        <rdfs:range rdf:resource="&faldo;Region"/>
>    </owl:ObjectProperty>
>  When I load the ontology in Protege 4.1, I see that "Region" has been added to the class list, but it is shown in a normal type rather than bold faced.
>  Is this the right approach to link out to other ontologies and is it expected that the other class appears among my defined classes?
> Thanks,
> Joachim
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