- From: Melvin Carvalho <melvincarvalho@gmail.com>
- Date: Fri, 18 Nov 2011 10:28:24 +0100
- To: Heiko Paulheim <paulheim@ke.tu-darmstadt.de>
- Cc: semantic-web@w3.org
On 18 November 2011 10:20, Heiko Paulheim <paulheim@ke.tu-darmstadt.de> wrote:
> Dear Ghalem,
>
> since such a property would be in a conflict with the open world assumption
> underlying the semantic web (you simply cannot tell "how many things of type
> X are there" in an open world), I suppose there is no serious schema which
> has such a property.
What if you kept a separate tally to aggregate total friends as they are added?
>
> Best,
> Heiko.
>
>
>
> Am 17.11.2011 18:40, schrieb Ghalem Ouadjed (EOWEO):
>
> Hi everyone,
> i would like to use a schema which is different and complementary of the
> foaf one, and which could contain a property like "number of friends".
>
> Does someone know an available ontology i could use pls?
>
> one of my query would look like :
>
> PREFIX rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
> PREFIX rdfs="http://www.w3.org/2000/01/rdf-schema#"
> PREFIX dc="http://purl.org/dc/elements/1.1/"
> PREFIX foaf="http://xmlns.com/foaf/0.1/"
> PREFIX ............="_"
>
> SELECT ?friendnb WHERE { ?Person ...;;;;:friendnb ?friendnb }
> ------------
> | friendnb |
> ============
> | "\n330\n" |
> ------------
> Thank you in advance for your advices and your time
>
> Cheers
> Ghalem
>
> --
> Dr. Heiko Paulheim
> Knowledge Engineering Group
> Technische Universität Darmstadt
> Phone: +49 6151 16 6634
> Fax: +49 6151 16 5482
> http://www.ke.tu-darmstadt.de/staff/heiko-paulheim
Received on Friday, 18 November 2011 09:28:56 UTC