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Re: RDF Containers and OWL Lite

From: Jeremy Carroll <jjc@hplb.hpl.hp.com>
Date: Fri, 28 Feb 2003 09:51:01 +0000
Message-ID: <3E5F3105.3090705@hpl.hp.com>
To: Brian McBride <bwm@hplb.hpl.hp.com>
CC: Jeremy Carroll <jjc@hplb.hpl.hp.com>, w3c-rdfcore-wg@w3.org


OK

Brian McBride wrote:

> At 11:08 27/02/2003 +0100, Jeremy Carroll wrote:
> 
> 
>> Agenda request for tomorrows telecon.
> 
> 
> 
> 
>> [My attempts to have this discussed in WebOnt have failed].
> 
> 
> Is see the webont chairs haven't decided yet:
> 
>   http://lists.w3.org/Archives/Public/www-webont-wg/2003Feb/0401.html
> 
> I have asked via the cg if they would like our input.  I'm inclined to 
> postpone a little bit till we hear from them.
> 
> Brian
> 
> 
> 
> 
> 
> 
> 
>> The current AS&S WD of WebOnt
>> http://www.w3.org/TR/owl-semantics
>>
>> permits the following in OWL Lite:
>>
>> <owl:Class rdf:about="&eg;Bag"/>
>> <owl:ObjectProperty rdf:about="&eg:_1"/>
>> <owl:ObjectProperty rdf:about="&eg:_2"/>
>> <eg:Bag>
>>   <eg:1>
>>     <owl:Thing/>
>>   </eg:1>
>> </eg:Bag>
>>
>> but prohibits from OWL Lite:
>>
>> <owl:Class rdf:about="&rdf;Bag"/>
>> <owl:ObjectProperty rdf:about="&rdf:_1"/>
>> <owl:ObjectProperty rdf:about="&rdf:_2"/>
>> <rdf:Bag>
>>   <rdf:1>
>>     <owl:Thing/>
>>   </rdf:1>
>> </rdf:Bag>
>>
>>
>> (Both examples may include rdfs:comments indicating that the informal
>> semantics intended is that of an rdf:Bag - an informal semantics that 
>> is not
>> formally supported either in OWL Lite or RDF).
>>
>> Both examples are in OWL Full and have identical semantics in OWL Full
>> (except that the URIs of the classes and properties differ).
>>
>> This appears to be an unmotivated failure of interoperability between OWL
>> Lite and RDF.
>>
>> I suggest that this WG may like to either:
>> - make a comment asking for a rationale on public-webont-comments
>> or
>> - ask Brian to raise this at the coordination group.
>>
>> Jeremy
>>
>> [My attempts to have this discussed in WebOnt have failed].
> 
> 
Received on Friday, 28 February 2003 04:51:21 EST

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