Re: rel names vs URLs

On 7/9/14 6:12 PM, Sandro Hawke wrote:
> This is only tangentially related to LDP.   I'm sending it here 
> because we've thought/talked about this problem a bit.  I don't think 
> it actually affects the LDP spec, although it might affect LDP users 
> in some situations.
>
> My particular use case is I want to use webmention with RDF data, but 
> the webmention folks have no particular interest (I think) in giving 
> me an RDF predicate URL for rel=webmention.     And I'd like to be 
> able to put it in the data, not just in a Link header (for the same 
> reason as the webmention spec allows it as <a rel="webmention"> not 
> just in Link headers.
>
> So, I'm wondering about just declaring that http://www.w3.org/ns/rel#X 
> means the HTTP link relation X.   As I understand Web Architecture, 
> that's perfectly within the purview of whoever owns 
> http://www.w3.org/ns/rel.   It wouldn't necessarily be the only URL 
> for the relation; it would just be one easy option.
>
> For people who don't want to use URLs for relations, this wouldn't 
> affect them, and they wouldn't need to know about it.  This would NOT 
> mandate that systems which understand rel=X have to also accept 
> rel=http://www.w3.org/ns/rel#X.  It would just allow every RDF system 
> to know one way link relations might be shown in RDF.
>
> The only technical issue I can think of -- and this isn't a problem, 
> just a question -- is whether dereferencing
> gives you a triple saying it's the same as 
> http://www.w3.org/1999/02/22-rdf-syntax-ns#type.    I'd lean toward Yes.
>
> Does anyone see a TECHNICAL problem with this idea?

Only concern is the orientation towards 
<http://www.w3.org/2002/07/owl#sameAs> when 
<http://www.w3.org/2002/07/owl#equivalentProperty> will do the job with 
less confusion re., your usage example above.

>
> Who do you think might dislike it for non-technical reasons? Feel free 
> to respond off-list on this last point.
>
>       -- Sandro

+1

for the approach in general.

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-- 
Regards,

Kingsley Idehen	
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OpenLink Software
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