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Re: From our comments list

From: Christopher Welty <welty@us.ibm.com>
Date: Thu, 13 Feb 2003 11:43:30 -0500
To: Jim Hendler <hendler@cs.umd.edu>
Cc: webont <www-webont-wg@w3.org>, www-webont-wg-request@w3.org
Message-ID: <OF9E622BAB.FD40BE4B-ON85256CCC.005B36C9-85256CCC.005BABF4@us.ibm.com>


I think it would be good to have another non-normative document or 
appendix that discusses "how to migrate from RDFS" (or RDF?) to OWL". This 
is not, IMHO, part of Guide, which is supposed to be a tutorial style 
introduction to the language, nor do I really see it as part of any other 
(current) document. 

Jeremy made a start in a message after the f2f:


I think someone familiar with RDFS (not Mike or me) should take a stab at 
expanding this into a short document. 


Dr. Christopher A. Welty, Knowledge Structures Group
IBM Watson Research Center, 19 Skyline Dr.
Hawthorne, NY  10532     USA 
Voice: +1 914.784.7055,  IBM T/L: 863.7055
Fax: +1 914.784.6912, Email: welty@us.ibm.com

Jim Hendler <hendler@cs.umd.edu>
Sent by: www-webont-wg-request@w3.org
02/12/2003 11:59 AM
        To:     webont <www-webont-wg@w3.org>
        Subject:        From our comments list

This comment, send to our public comments list talkin about Guide:

At 15:55 +0100 2/12/03, Ivan Herman wrote:
>Reviewing the OWL Guide version 1.0,
>As a reader NOT participating in the working group (ie, not being part
>of all the intricate discussions), the current document is very
>confusing on the issue on how OWL and RDFS relate. The impression one
>gets when reading the document is that OWL picks bits and pieces of the
>RDFS document for its own purposes (rdfs:subClassOf, rdfs:label, etc),
>but deliberately ignores or deprecates, for example, rdfs:Property or
>rdfs:Class by introducing owl:Class, owl:ObjectProperty, and owl:Thing,
>etc. I presume there is a clear model on how these notions relate to one
>another, but I am afraid the current document creates real confusion to
>the community. Adding a separate chapter describing the 'onion model' of
>concentric possibilities offered by RDFS and the various OWL dialect
>would be beneficial.

reflects the confusion in our current layering and raises a point we 
will have to handle -- I have sent him a reply pointing him at 
overview and ref, and mentioning we are working on this -- I believe 
we need to create a section for one of our documents, or that could 
appear separately on our website pointed to by our documents, that 
discusses this issue -- if we don't do it before LC, we can be sure 
to get comments like this and have to address it before we move 
further through the process

Professor James Hendler    hendler@cs.umd.edu
Director, Semantic Web and Agent Technologies              301-405-2696
Maryland Information and Network Dynamics Lab.             301-405-6707 
Univ of Maryland, College Park, MD 20742                   240-731-3822 
Received on Thursday, 13 February 2003 11:44:12 UTC

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