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RE: RDF features in OWL 2

From: Michael Schneider <schneid@fzi.de>
Date: Mon, 3 Nov 2008 15:50:59 +0100
Message-ID: <0EF30CAA69519C4CB91D01481AEA06A0E05FEF@judith.fzi.de>
To: "Ian Horrocks" <ian.horrocks@comlab.ox.ac.uk>, "Jie Bao" <baojie@cs.rpi.edu>
Cc: "W3C OWL Working Group" <public-owl-wg@w3.org>
Hi!

I think Jie's question can easily be answered. Have a look in Section 2.3 of
the Specification:

  <http://www.w3.org/2007/OWL/wiki/Syntax#URIs_and_Namespaces>

All the URIs asked for have an "rdf" namespace prefix, so they are reserved
according to Table 2. And none of these URIs appear in Table 3 ("Reserved
Vocabulary with Special Treatment"). So the answer is "not supported in OWL
2 DL" to all these URIs.

The related (now closed) issue is ISSUE-104 ("dissallowed vocabulary").

Further, there is no (explicit semantic) relationship between the original
RDF Reification ("rdf:Statement") and the new annotation-reification
("owl:Axiom") vocabulary. We have introduced the latter as a resolution for
ISSUE-67 ("reification for axiom annotation"). 

Michael

>-----Original Message-----
>From: public-owl-wg-request@w3.org [mailto:public-owl-wg-request@w3.org]
>On Behalf Of Ian Horrocks
>Sent: Monday, November 03, 2008 2:24 PM
>To: Jie Bao
>Cc: W3C OWL Working Group
>Subject: Re: RDF features in OWL 2
>
>
>Sorry for the slow reply -- still catching up after the F2F and ISWC.
>
>Speaking for myself, I don't see any point in including these
>features in the QR.
>
>Ian
>
>
>On 23 Oct 2008, at 01:12, Jie Bao wrote:
>
>>
>> Hi All
>>
>> I'm not quite sure whether the following RDF features are still
>> supported in OWL 2
>>
>> * complex values using rdf:value, e.g.
>> http://www.w3.org/TR/2004/REC-rdf-primer-20040210/#example21
>> * RDF containers
>> * RDF reification (in particular, I'm not sure about its relationship
>> to owl:Axiom reification)
>>
>> I'm asking for decisions on whether to include them in the quick
>> reference. I didn't see their presence in any of the existing OWL 2
>> documents. Thanks in advance.
>>
>> Jie
>>
>

--
Dipl.-Inform. Michael Schneider
FZI Forschungszentrum Informatik Karlsruhe
Abtl. Information Process Engineering (IPE)
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Email: Michael.Schneider@fzi.de
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Received on Monday, 3 November 2008 14:51:42 UTC

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