Re: What is the meaning of a taxo: URIs ?

On Mon, 27 Dec 2004 13:31:42 -0000, janegilkristiansen
<[email protected]> wrote:
> 
> 
> In http://web.resource.org/rss/1.0/modules/taxonomy/,
> http://dmoz.org/Computers/Data_Formats/Markup_Languages/SGML/ is an
> example of a taxonomy URI.
> 
> To a human, it is obvious that a page about Markup_Languages/SGML/ is
> also about Markup_Languages/.
> 
> But is that obvious to a metadata search engine? Or is additional
> markup required to define SGML/ as a taxonomic subset of
> Markup_Languages/SGML/ ?

According to the Architecture of the World Wide Web [1], it's not a
good idea to try and extract meaning from URIs, so additional data
will be required. But the DMOZ scheme *does* define the relationships,
and those different URIs can reasonably be used to convey the taxonomy
managed by DMOZ (but the same doesn't apply for arbitrary URIs).
 
The structure definitions can be found in one of the big dumps at [2],
it's /nearly/ RDF/XML, see [3].

If you're looking at taxonomies then you may want to check out SKOS,
which features a schema that offers general support for this kind of
thing, guide is at [4].

Cheers,
Danny.

[1] http://www.w3.org/TR/2004/REC-webarch-20041215/#uri-opacity
[2] http://rdf.dmoz.org/
[3] http://esw.w3.org/topic/DmozRdf
[4] http://www.w3.org/2001/sw/Europe/reports/thes/1.0/guide/

-- 

http://dannyayers.com


 
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