W3C home > Mailing lists > Public > semantic-web@w3.org > November 2008

Re: Domain and range are useful Re: DBpedia 3.2 release, including DBpedia Ontology and RDF links to Freebase

From: Peter Ansell <ansell.peter@gmail.com>
Date: Tue, 18 Nov 2008 15:52:27 +1000
Message-ID: <a1be7e0e0811172152l66945e30l5425c933208a2b0a@mail.gmail.com>
To: "Tim Berners-Lee" <timbl@w3.org>
Cc: "John Goodwin" <John.Goodwin@ordnancesurvey.co.uk>, "Chris Bizer" <chris@bizer.de>, public-lod@w3.org, "Semantic Web" <semantic-web@w3.org>, dbpedia-discussion@lists.sourceforge.net, dbpedia-announcements@lists.sourceforge.net
2008/11/18 Tim Berners-Lee <timbl@w3.org>

>
> On 2008-11 -17, at 11:27, John Goodwin wrote:
>
> [...]
> I'd be tempted to generalise or just remove the domain/range
> restrictions. Any thoughts?
>
>
> There are lots of uses for rand and domain.
> One is in the user interface -- if you for example link a a person and a
> document, the system
> can prompt you for a relationship which will include "is author of" and
> "made" but won't include foaf:knows or is issue of.
>
> Similarly, when making a friend, one can us autocompletion on labels which
> the current session knows about and simplify it by for example removing all
> documents from a list of candidate foaf:knows friends.
>
> It is of course also important for checking hand-written files for
> validity.
>
> Tim BL
>

I think there are uses as you demonstrate, but checking hand written
(effectively) Wikipedia extracts for validity is practically impossible. It
may happen that assuming the dbpedia range and domain are correct that you
might not have access to something you would otherwise have correctly been
able to see in a given situation. Maybe the best idea is to leave the range
and domain in dbpedia as naive possibilities and people who are worried that
they are not going to be correct enough for the level of risk in their
application can ignore them for the dbpedia data set.

Cheers,

Peter
Received on Tuesday, 18 November 2008 05:53:03 GMT

This archive was generated by hypermail 2.3.1 : Tuesday, 26 March 2013 21:45:26 GMT