[rdfweb-dev] domain of foaf:interest

Dan Brickley danbri at w3.org
Fri Sep 24 00:19:12 UTC 2004


* Morten Frederiksen <mof-rdf at mfd-consult.dk> [2004-09-24 00:06+0200]
> Hi,
> 
> Perhaps an agenda item for the next ScheduledTopicChat:
> 
> When hacking up an "author list" for the WP FOAF plugin [1], I noticed that 
> the blogroll of planetrdf [2] had some foaf:interest properties on the 
> foaf:Document nodes describing the weblogs that are aggregated.
> 
> This leads to a textbook contradiction [3], as the domain of foaf:interest is 
> foaf:Person, and foaf:Document and foaf:Person are declared as 
> owl:disjointWith each other.
> 
> After chatting a bit with dajobe, who changed the blogroll right away, we 
> realised that the change wasn't enough, as the blogroll contains weblogs of 
> groups and projects, some of which may be said to have interests. However, 
> because of the domain "contraint", these are now all person's, which is 
> clearly wrong.
> 
> One solution would be to remove the interest statements, perhaps using 
> foaf:topic on the channels/items, but it doesn't seem to be all that 
> irrelevant to talk of interests for at least groups, so I suggest relaxing 
> the domain of foaf:interest to foaf:Agent instead of foaf:Person.

Good point. And who says OWL has only esoteric uses! It helps keep our
modeling honest, at least...

Anyone here object to such a change? If I don't here complaints, it'll
happen.

Dan
> 
> 
> [1] 
> http://www.wasab.dk/morten/blog/archives/2004/07/05/wordpress-plugin-foaf-output
> [2] http://journal.dajobe.org/journal/2003/07/semblogs/bloggers.rdf
> [3] http://rdfweb.org/topic/FoafContradictions
> 
> 
> Regards,
> Morten
> 
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