W3C home > Mailing lists > Public > public-owl-wg@w3.org > February 2009

Re: DRAFT response to comment #54, Jan Wielemaker

From: Ian Horrocks <ian.horrocks@comlab.ox.ac.uk>
Date: Sat, 14 Feb 2009 23:23:54 +0000
Message-Id: <ECCED599-74BB-4718-8658-05029466287D@comlab.ox.ac.uk>
Cc: ivan@w3.org, public-owl-wg@w3.org
To: Peter F. Patel-Schneider <pfps@research.bell-labs.com>
+1

On 11 Feb 2009, at 13:04, Peter F. Patel-Schneider wrote:

>
> Looks good.
>
> peter
>
>
> From: Ivan Herman <ivan@w3.org>
> Subject: DRAFT response to comment #54, Jan Wielemaker
> Date: Wed, 11 Feb 2009 11:38:55 +0100
>
>> This response is, actually, a possible pattern for a number of other
>> comments on the exact role of OWL/XML. Ie, if this is fine for the
>> group, we may want to reuse, essentially, the same text for a  
>> number of
>> others (to be exactly identified).
>>
>> The reason I chose this one is because Jan did _not_ question the rec
>> track aspect of OWL/XML per se (in contrast to, eg, the corresponding
>> UvA comment). In this sense this one is simpler...
>>
>> Here is the proposed text. I have also updated
>> http://www.w3.org/2007/OWL/wiki/LC_Responses/JR8.
>>
>> Ivan
>>
>> ========
>>
>> Dear Jan,
>>
>> Thank you for your comment
>>
>> <http://lists.w3.org/Archives/Public/public-owl-comments/2009Jan/ 
>> 0069.html>
>> on the OWL 2 Web Ontology Language last call drafts.
>>
>> Unfortunately, your comment is based on a confusion, which is our  
>> fault
>> in not conveying the message clearly enough. The technical fact is  
>> that
>> there is no change between OWL 1 and OWL 2 in terms of the stack you
>> refer to in your comment.
>>
>> Indeed, Section 2.1 of the Conformance and Test Cases document states
>> the following:
>>
>> "Several syntaxes have been defined for OWL 2 ontology documents,  
>> some
>> or all of which could be used by OWL 2 tools for exchanging  
>> documents.
>> However, conformant OWL 2 tools that take ontology documents as  
>> input(s)
>> must accept ontology documents using the RDF/XML serialization [OWL 2
>> Mapping to RDF Graphs], and conformant OWL 2 tools that publish  
>> ontology
>> documents must, if possible, be able to publish them in the RDF/XML
>> serialization if asked to do so (e.g., via HTTP content  
>> negotiation)."
>>
>> See:
>>
>> http://www.w3.org/TR/2008/WD-owl2-test-20081202/#Conformance_. 
>> 28Normative.29
>>
>> In other words, the only _required_ exchange syntax among OWL 2  
>> tools is
>> based on RDF and is RDF/XML (the only small caveat, referred to by  
>> the
>> 'if possible' remark in the text, is that there are valid RDF graphs
>> that cannot be serialized into RDF/XML, eg, if complex URI-s are used
>> for property IDs). Ie, the situation has _not_ changed compared to  
>> OWL 1.
>>
>> The confusion obviously comes from the fact that the OWL/XML syntax,
>> which was published as a note[1] for OWL 1, is now on Recommendation
>> track. OWL/XML for OWL 1 was an optional feature that OWL 1 tools  
>> could
>> implement if they wished to do so. The fact that OWL/XML is now  
>> planned
>> as a recommendation has not changed this.
>>
>> All that being said, the Working Group recognizes that this issue may
>> lead to confusion, as witnessed by a number of comments that  
>> expressed
>> the same concerns as yours. The group will take appropriate steps in
>> conveying this information better by, eg, including multi-syntax  
>> formats
>> into the functional specification, or making the situation clearer in
>> the appropriate status sections. Details of these steps are not yet
>> decided at this time.
>>
>> [1] http://www.w3.org/TR/owl-xmlsyntax/
>>
>> Please acknowledge receipt of this email to
>> <mailto:public-owl-comments@w3.org> (replying to this email should
>> suffice). In your acknowledgment please let us know whether or not  
>> you
>> are satisfied with the working group's response to your comment.
>>
>> Regards,
>> Ivan Herman
>> on behalf of the W3C OWL Working Group
>>
>> ===========
>> -- 
>>
>> Ivan Herman, W3C Semantic Web Activity Lead
>> Home: http://www.w3.org/People/Ivan/
>> mobile: +31-641044153
>> PGP Key: http://www.ivan-herman.net/pgpkey.html
>> FOAF: http://www.ivan-herman.net/foaf.rdf
>
Received on Saturday, 14 February 2009 23:24:35 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Saturday, 14 February 2009 23:24:38 GMT