W3C home > Mailing lists > Public > semantic-web@w3.org > March 2005

Re: tagging, scope, sweeping statements

From: Benjamin Nowack <bnowack@appmosphere.com>
Date: Sat, 26 Mar 2005 16:12:30 +0100
To: Stan James <sjames@uni-osnabrueck.de>
Cc: semantic-web@w3.org
Message-ID: <PM-EH.20050326161230.9917C.1.1D@>

On 26.03.2005 11:35:04, Stan James wrote:
>Hi all,
>Sorry if this has been beaten to death before (I checked the archives, 
>honest!) but I'm wondering how to express statements about a *class* of 
>URI's, as opposed to just one.  Seemed apropos to all this talk of 
>del.icio.us and tagging.
Did you see Phil Archer's recent announcement[1] of "RDF Content
Labels"? From the uses cases doc[2]:
This document describes use cases in which collections of resources
share a common description.
Didn't have the time to read all of it yet, but they seem to
support regular expressions on URIs to group resources..


[1] http://lists.w3.org/Archives/Public/semantic-web/2005Mar/0176.html
[2] http://www.w3.org/2004/12/q/doc/rdf-contentlabels.html

Benjamin Nowack

Kruppstr. 100
45145 Essen, Germany

>My project can, among other things, display the tags associated with a 
>page while you are browsing.  The problem with a del.icio.us-style 
>format is that I must infer generalizations: a tag of "news" on 
>http://www.cnn.com/ should also apply to a page deep within the site.  
>But a tag of "news" on http://news.google.com does NOT apply to every 
>page on google.com.
>Rules of thumb can get me so far, but something explicit would be far 
>better.  I'm currently using something like this:
><item rdf:about="http://news.google.com/">
>  <title>Google News</title>
>  <link>http://www.google.com/</link>
>  <x:scope>*news.google.com/*</x:scope>
>  ...
>Is there a standardized or more elegant way to express this?  I'm an RDF 
>newbie and would appreciate any tips. A project summary is at 
Received on Saturday, 26 March 2005 15:12:28 UTC

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