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Re: a summary of skos changes

From: Antoine Isaac <aisaac@few.vu.nl>
Date: Tue, 09 Sep 2008 22:46:42 +0200
Message-ID: <48C6E0B2.9070006@few.vu.nl>
To: SWD Working Group <public-swd-wg@w3.org>

Hi Ed,

>
> Am I reading the definition the note properties wrong in the RDF for
> SKOS2008 [1]. Also the Reference has this chunk of text [2]. So it
> seems to be intentional, and not an oversight.
>
> """
> Note that the basis for the SKOS data model is the RDF-compatible
> model-theoretic semantics for OWL Full [OWL-SEMANTICS]. Under the OWL
> Full semantics, the class of OWL datatype properties is a sub-class of
> the class of OWL object properties [OWL-REFERENCE]. Therefore, stating
> that the SKOS documentation properties are all instances of
> owl:ObjectProperty is the most general statement that can be made, and
> is consistent with all three usage patterns described in the SKOS
> Primer.
> """
>
>   

OK! I had in fact overlooked it.
Note that even though I'm not obsessed by OWL-DL compliance, I don't 
really see what we practically gain from adding this axiom to the SKOS 
ontology. We could as well say that it's just an rdf:Property (which in 
OWL Full would not be far away from saying it's an object property, 
would it?).
Who knows, that may one day turn useful for these would want to use 
subsets of SKOS that would be OWL-DL. And as an immediate, tangible 
benefit, we would at least have this awful paragraph removed from the 
Reference ;-)

Antoine

>>> SKOS2008 includes some new vocabulary elements for mapping concepts from
>>> one
>>> concept scheme to another: skos:exactMatch, skos:broadMatch,
>>> skos:narrowMatch, skos:relatedMatch.
>>>       
>> There is also skos:closeMatch
>>     
>
> While I see the definition for skos:closeMatch in the Reference [3] I
> don't actually see that in the RDF for SKOS2008 [1]--which is why my
> vdiff utility didn't pick it up I guess :-) Perhaps the HTML and the
> RDF are out of sync? Thanks for catching it!
>
> //Ed
>
> [1] http://www.w3.org/TR/2008/WD-skos-reference-20080609/skos.rdf
> [2] http://www.w3.org/TR/skos-reference/#L1917
> [3] http://www.w3.org/TR/skos-reference/#L4186
>
>
>   
Received on Tuesday, 9 September 2008 20:47:13 UTC

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