W3C home > Mailing lists > Public > www-rdf-interest@w3.org > June 2001

Re: What to do about namespace derived URI refs... (long)

From: Sean B. Palmer <sean@mysterylights.com>
Date: Wed, 6 Jun 2001 15:09:09 +0100
Message-ID: <013901c0ee92$64a143a0$60dd93c3@z5n9x1>
To: <Patrick.Stickler@nokia.com>, <www-rdf-interest@w3.org>
Cc: <Ora.Lassila@nokia.com>
> Yes, there is definite overlap in my thinking on HRNs and
> the tag URI scheme, [...]

Except that tags are unique throughout space and time, and HRNs are
only unique troughout space? If you added some sort of time field to
an HRN, then you'd have a tag, more or less. One of the primary facets
of discussion pertaining to tags when they were first announced was
the decision that they should take an entire URI scheme rather than be
a specific type of URN...

> The key point here is that (a) we use URNs rather than
> URLs to identify namespaces and abstract resources, [...]

Maybe, but note that this is only a "problem" where there is an
overlap in the very concept of what a namespace "is". RDF treats it
differently because it concatenates names onto the end to from a
URI/URI-Reference... there's no problem at all to other RDF
applications where a URI for a term is specified somwhere, even if
this URI is also a URL. For example, the XSD specification tell you
what URI to use to identify the terms within its namespace; no

Kindest Regards,
Sean B. Palmer
@prefix : <http://webns.net/roughterms/> .
:Sean :hasHomepage <http://purl.org/net/sbp/> .
Received on Wednesday, 6 June 2001 10:08:36 UTC

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