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Re: OWL without RDF

From: Jim Hendler <hendler@cs.umd.edu>
Date: Thu, 16 Nov 2006 15:01:00 -0500
Message-Id: <p0623092bc18273b7bd0c@[]>
To: William Bug <William.Bug@DrexelMed.edu>, Holger Knublauch <holger@topquadrant.com>
Cc: public-semweb-lifesci@w3.org
actually, we're trying to move the discussion to public-owl-dev@w3.org
there's a thread there that expresses some of my concerns about 
moving away from the OWL syntax - given that the primary tools out 
there right now still assume the OWL is integrated with the RDF 

At 2:52 PM -0500 11/16/06, William Bug wrote:
As I expected, the experts are listening.  :-)

Many thanks, Holger.  That's extremely important to know.

I will dig into the thread for more detail.  One main concern would 
be whether that was just a token gesture to stay compatible for now, 
as opposed to a commitment to remain compatible, until or unless an 
effective alternative is provided to representing very large 
knowledgebases in RDF.

I think more than anything I was a bit overwhelmed by the collective 
picture given by those half-dozen or so presentations from last 
week's meeting.  The meeting seemed "fresh" enough, so that it could 
be expected to be reflective of the status quo.  I assume there was 
much heated discussion during the meeting, that would have filled out 
such detail - or such has been carried out on the owl-dev list.

I suppose it's also a good idea to dig into the OWL Extensions list 
hosted by Jim Hendler's lab:


On Nov 16, 2006, at 2:33 PM, Holger Knublauch wrote:

However, I'd point out, in the last document, where they describe a 
mapping of OWL 1.1 to RDF, they make the following caveat:
Not every OWL 1.1 ontology can be serialized in RDF. In particular, 
ontologies using the following features of OWL 1.1 cannot be 
    1. punning and
    2. annotations on axioms.

Please see a recent thread on the public-owl-dev mailing list about 

Bijan states:
"The RDF mapping has lagged behind the others, but the plan is to
extend the mapping to cover these cases."

TopQuadrant, Inc.

Bill Bug
Senior Research Analyst/Ontological Engineer

Laboratory for Bioimaging  & Anatomical Informatics
Department of Neurobiology & Anatomy
Drexel University College of Medicine
2900 Queen Lane
Philadelphia, PA    19129
215 991 8430 (ph)
610 457 0443 (mobile)
215 843 9367 (fax)

Please Note: I now have a new email - 

Prof James Hendler				hendler@cs.umd.edu
Dept of Computer Science			http://www.cs.umd.edu/~hendler
AV Williams Bldg				301-405-2696 (work)
Univ of Maryland				301-405-6707 (Fax)
College Park, MD 20853 USA
Received on Thursday, 16 November 2006 20:02:55 UTC

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