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Re: annotation properties questions

From: Guus Schreiber <schreiber@cs.vu.nl>
Date: Thu, 29 Jan 2004 11:39:31 +0100
Message-ID: <4018E2E3.9060404@cs.vu.nl>
To: bnowack@appmosphere.com
Cc: public-webont-comments@w3.org

> From: Benjamin Nowack <bnowack@appmosphere.com>
> Date: Fri, 9 Jan 2004 15:49:53 +0100
> To: public-webont-comments@w3.org
> Cc: Holger Knublauch <holger@SMI.Stanford.EDU> 

> Hi,
> it would be great if someone could confirm/answer the following, 
> I'm not 100% sure if I got it right. The questions are partly related
> to Holger Knublauch's comments on annotation properties in OWL DL [1].
> 1) I would like to use dc:creator as a DatatypeProperty. If I say
>    <owl:DatatypeProperty rdf:about="&dc;creator" />, am I still 
>    in OWL DL space?
> 2) I would like to use dc:creator to annotate my ontology. Now
>    I must not have the above statement in my ontology if I don't
>    want it to become OWL Full. Right?


Thanks for your comments.

Both your assumptions are correct. In response to your and other 
requests for more explanation on this issue, we have elaborated in the 
OWL Reference document the description of OWL DL constraints on 
annotation properties. See Sec. 7.1 of the most recent editor's draft:


(temporarily NOT linked from the WebOnt home page).

> 3) <owl:AnnotationProperty rdf:about="&dc;creator"/> allows me to
>    use it on classes, properties, individuals and ontology headers,
>    but reasoners will ignore them. Does that mean, that API builders
>    should skip annotation properties in e.g. rdql query patterns? Or
>    does this only mean that annotation properties should not be used
>    for class modeling etc.? 
> I appreciate any help. Thanks in advance.
> Benjamin
> [1] http://lists.w3.org/Archives/Public/public-webont-comments/2003Dec/0000.html

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E-mail: schreiber@cs.vu.nl
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Received on Thursday, 29 January 2004 05:40:38 UTC

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