W3C home > Mailing lists > Public > semantic-web@w3.org > September 2007

Re: What if an URI also is a URL

From: Oskar Welzl <lists@welzl.info>
Date: Tue, 18 Sep 2007 21:18:29 +0200
To: Richard Cyganiak <richard@cyganiak.de>
Cc: semantic-web@w3.org, Edward Bryant <edward.bryant@gmail.com>
Message-Id: <1190143109.10295.15.camel@jupiter.hormayrgasse>


Am Freitag, den 14.09.2007, 19:38 +0200 schrieb Richard Cyganiak:
> > Right now I make up arbitrary URIs for sites, using sioc:/rss:link to
> > point to the main page. While this works well in my own little  
> > universe,
> > its just a mess when comined with, say, foaf-data that expects
> > foaf:weblog to be a foaf:document, not a madeup:Site that  
> > sioc:links to
> > a foaf:document.

> Why would you want to link to an entire *site* in foaf:weblog? That  
> seems useless to me. If I stumble upon your FOAF file, and see that  
> there is a foaf:weblog link, then I don't care about the entire  
> abstract collection of resources that make up your weblog; I care  
> about the homepage.

Dont worry, I don't want to link to anything but a document in my
foaf-file ;) 
The interpretation of foaf:homepage/foaf:weblog seems to be more of a
html-link or bookmark ("go there to see my homepage") than of a "site".
And this is fine as long as its all within foaf.

What I meant was that once you made a statement about a "site" in a
non-foaf-context the way we agreed before (using hash-/303-URI), and
this site is your weblog or homepage, once you craft your foaf-file you
suddenly find there are now two URIs for your weblog: the document-one
from foaf and the other one you minted for the site. You can't sameAs
them, because they're not the same thing. You'll have to find ways to
link from the one to the other in order to avoid duplicating
information... That's what's "messy" as I wrote above.

> I think [1] does most of this.
> [1] http://www.w3.org/TR/powder-grouping/

OMG, this is a monster... ;)
it does a lot, yes, but does it say somewhere "this is the main page of
this site, bookmark *this* if you want to return?" Didnt see something
like it there, but maybe I missed it. Need to re-read...

Received on Tuesday, 18 September 2007 19:38:12 UTC

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