Re: temporary urn:predicates

On 30 June 2015 at 16:59, Melvin Carvalho <melvincarvalho@gmail.com> wrote:

> I was talking recently about barriers to producing semantic web data.
>
> Normally a predicate has to be
>
> - A URI
> - Preferably an HTTP URI
> - Preferably an existing URI
>
> This (Im told) can be a barrier for newcomers.  They have to find the
> right name for a predicate, the right URI, and then see if it's already
> used.  If not create their own vocabulary.
>
> At this point some might give up.
>
> So I was wondering how it might be possible to create a temporary URI that
> people could use as a place holder, so the software still works, until they
> think of a better name.
>
> We've all had to do this at some point, right?
>
> So I originally used to use things like:
>
> </predicate> or
> <#predicate>
>
> But that breaks down when you start using multiple documents because the
> URI is relative to the base.
>
> So I thought why not use:
>
> <urn:predicate>
>
> It seems to me local predicates are "just a name" and a urn is "just a
> name" so it would be a good match.
>
> My main concern is whether it would have collisions with the IANA registry:
>
> http://www.iana.org/assignments/urn-namespaces/urn-namespaces.xml
>
> Any thoughts?
>

Someone pointed me to :

http://www.w3.org/ns/activitystreams

Which uses

@vocab = _:

So then

predicate becomes _:predicate

Maybe that's the right pattern ...