W3C home > Mailing lists > Public > public-xg-mmsem@w3.org > March 2007

Re: [Re: Re: [MMSEM] RDF and syntactic interoperability]]

From: Gaëtan Martens <Gaetan.Martens@ugent.be>
Date: Sat, 31 Mar 2007 21:07:50 +0200
Message-ID: <460EB186.3000204@ugent.be>
To: public-xg-mmsem@w3.org

Well,

RDF and OWL differ in that RDF limits data types to those types that can 
be referenced by a URI and
OWL also accepts the use of data types to create classes of data types 
that are then used to constrain the range of the properties...

Best regards,
Gaëtan
--
Gaëtan Martens

Ghent University - IBBT
Faculty of Engineering
Department of Electronics and Information Systems
Multimedia Lab

Gaston Crommenlaan 8 bus 201
B-9050 Ledeberg-Ghent
Belgium

t: +32 9 33 14959
f: +32 9 33 14896
t secr: +32 9 33 14911
e: gaetan.martens@ugent.be

URL: http://multimedialab.elis.ugent.be



Danny Ayers wrote:
> On 30/03/07, Gaëtan Martens <Gaetan.Martens@ugent.be> wrote:
>>
>> Dear Susanne,
>>
>> You're right about the fact that it's impossible to describe such 
>> regions in RDF.
>> That's why we recommend using OWL. In OWL, one can refer to a data 
>> type and tie it into an ontology.
>
> Please forgive a question from a lurker - aren't the definitions of
> XML Schema datatypes common to both RDF(S) and OWL? How, in relation
> to the problem of describing regions does:
>
> <owl:DataTypeProperty rdf:about="...">
>       <rdfs:domain rdf:resource="#SomeClass">
>       <rdfs:range  rdf:resource="someXMLns:anXMLType">
> </owl:DataTypeProperty>
>
> differ from
>
> <rdf:Property rdf:about="...">
>       <rdfs:domain rdf:resource="#SomeClass">
>       <rdfs:range  rdf:resource="someXMLns:anXMLType">
> </rdf:Property>
>
> ?
>
> I can't see anything in:
> http://www.w3.org/TR/swbp-xsch-datatypes/
>
> Cheers,
> Danny.
Received on Saturday, 31 March 2007 19:07:59 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Tuesday, 8 January 2008 14:21:21 GMT