[rdfweb-dev] foaf: namespace

Graham Klyne gk-rdfweb at n...
Mon Apr 15 20:03:20 UTC 2002

At 10:23 AM 4/15/02 -0400, Dan Brickley wrote:
>So as far as this stuff goes, if someone wants to write up a bit of text
>plus schema for basic addressing stuff in FOAF, I'll check it in. There is
>as Libby mentions also vCard, and a contact: namespace that is getting
>some use within W3C circles. I don't want to duplicate existing facilities
>but I'm also concerned to have folk learn a dozen RDF schemas to get their
>job done.

I suspect the last sentence indicates the real cost of getting things 
done. Sometimes, the energy required just to track down the right schema 
seems just too damned offputting. By comparison, writing up some stuff for 
FOAF seems like a breeze. The concern, I suppose, is the potential Babel 


(The rest of this message is the unstructured result of some small random 
explorations into RDF schema usage on the Web...)

Has anyone published a directory-of-schema yet? (Google isn't very 

OK, here's a question for y'all: what do you suppose are the 10 most 
widely used RDF schemas ijn the Web (not including RDF and RDFS).

My guess:
- dc
- rss
- foaf
- daml
- WordNet maybe should be, but I'm not sure it is

At this point, I'm hard pushed to think of any that are widely deployed 
outside specialist areas.

The RDF calendaring work, vCard, N3's logic vocabulary, CC/PP, P3P, Topic 
maps, airports, ...

This has some statistics on namespaces in RDF on the web:

I just discovered this. Maybe old hat around here:
http://www.w3.org/2001/10/navigate/ Note sure where it goes, though.

It seems that Yahoo have taken http://purl.org/ schema files 
offline. Hiss. :-(


Anyway, the upshot of this is that I've started to compile a file of schema 
URIs: 21 and some promising prefixes so far. Surely there are more than this?


Graham Klyne
<GK at N...>

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