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Re: SKOS Comment (Reference WD June 2008) - broaderTransitive < broader, narrowerTransitive < narrower

From: Antoine Isaac <aisaac@few.vu.nl>
Date: Fri, 27 Jun 2008 09:40:20 +0200
Message-ID: <48649964.5030208@few.vu.nl>
To: Ana Oliveira <ana.quirino.oliveira@gmail.com>, SWD WG <public-swd-wg@w3.org>

Dear Joao,

Your comment is actually one that we got some times, especially on the 
SKOS list itself.

Look at 
http://lists.w3.org/Archives/Public/public-esw-thes/2008Jun/0016.html
and my answer at 
http://lists.w3.org/Archives/Public/public-esw-thes/2008Jun/0018.html
for some insight at the formal aspects.

Now, maybe in a more pedagogical way (and using Leonard's argument): 
broaderTransitive is a transitive specialization link. So it can be 
interpreted as "ancestor" (while broader is a mere "parent"). And of 
course "parent" is a special case of "ancestor", not the other way round.

That being said, it's very useful for us to realize that this 
specialization aspect is so much a problem. I'll try to add some 
sentences in the Primer about it. And of course if it is not clear now 
you should complain again.

Thanks a lot for your feedback,

Antoine


> Dear SKOS Editors,
>
> The definition S19 states that:
>     "S19  skos:broader is a sub-property of skos:broaderTransitive and 
> skos:narrower is a sub-property of skos:narrowerTransitive".
>
> I think the correct form should be:
>     "S19  skos:broaderTransitive is a sub-property of skos:broader and 
> skos:narrowerTransitive is a sub-property of skos:narrower".
>
> because "to be broader transitive" is a specific case of "to be 
> broader" (or narrower). The generic property should subsumes the 
> specific one.
>
>      If my comment is correct, it is necessary to adjust the "full set 
> of sub-property relationships" diagram (above "Example 53") to follow 
> this new hierarchy.
>
> Best
>
> Joao Alberto de Oliveira Lima
>
> PS. This same comment was done in March'08 by 
> http://lists.w3.org/Archives/Public/public-swd-wg/2008Mar/0089.html
>
Received on Friday, 27 June 2008 07:40:55 GMT

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