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[protege-discussion] Using the Tutorial: Things don't look right

Bruce Whealton bruce at
Mon Jun 20 04:52:30 PDT 2011

Hi Maroun,
            Maybe I need to get a better understanding of importing a 
vocabulary or ontology.  I took a different route and saved the bio 
vocabulary as RDF/XML and imported that file.  In that sense, it would be 
like it was created inside Protégé if that makes any sense.  That is 
different from referencing it with its uri.  So, if I wanted to extend BIO 
and REL vocabularies inside Protégé and create some instance data, would it 
be best to just reference an existing vocabulary and is that the same as 
importing it?  In other words, the way I imported BIO was to actually import 
the rdf/xml file that defines the bio schema.
            The larger question is what does Protégé do when it imports an 
ontology?  Some ontologies might be built-in as it were, inside the code, so 
that Protégé knows all about them but for others perhaps it is necessary 
that Protégé imports all the RDF triples that make up the ontology in order 
to reason and work with the graph data.
     I hope I made sense.  :-)

-----Original Message----- 
From: maroun
Sent: Monday, June 20, 2011 1:47 AM
To: protege-discussion at
Subject: Re: [protege-discussion] Using the Tutorial: Things don't look 

Hi Bruce,

                                           <Thanks so much.  I'm finding it
you are most welcomed.

       < So, I got the vocabulary named BIO for Biographic information and
imported it into Protégé 3.x.  Strangely it didn't actually import or
include a namespace prefix of bio.  So, I'm a little confused.  If the
vocabulary is defined and available on the web, should I or do I need to
import it to use it?  Or do I just add a namespace prefix which links to the
vocabulary specification?>

I definitely recommend that you use Protégé 4.1 (build 234) or later. you
can find download information

Thus, I have no exact reply regarding BIO vocabulary because I actually
never used it, I find no problem while importing this vocabulary; I went to
the active ontology --> import : I wrote the uri: and when I go to the object or data property
It is all there.

FOAF did represent some problems earlier as I remember regarding properties,
with properties that are datatype and object properties at the same time;
you can check this topic if you are interested.


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