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

Ian Davis a écrit :
> 
> On Tue, Nov 18, 2008 at 4:02 AM, Tim Berners-Lee <timbl@w3.org
> <mailto:timbl@w3.org>> wrote:
> 
> 
>     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.
> 
> 
> Both these use cases require some OWL to say that documents aren't
> people. I don't see these scenarios being feasible in the general case
> because you'd need a complete description of the world in OWL, i.e.
> you'd want to know about everything that can't possibly be a person.

This is technically true.
However, from a user interface point of view, it is reasonable to use
the *explicit* statements as a guiding heuristic -- although it should
be possible, with additional steps, to add a foaf:knows bewteen any two
resources, even if one is not explicitly typed as a foaf:Person.

  pa

Received on Tuesday, 18 November 2008 17:05:30 UTC