- From: Jonathan Borden <jonathan@openhealth.org>
- Date: Thu, 10 Oct 2002 07:30:09 -0400
- To: "Miles Sabin" <miles@milessabin.com>, <www-tag@w3.org>
Miles Sabin wrote: > > Jonathan Borden wrote, > > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1772811392 > > > > is this a web page or a car or an auction for a car? > > Any of the above, assuming the appropriate context. > > In *this* context it's probably the URI of an "example" ;-) > Exactly. In RDF we might say (in different contexts) <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1772811392> a :web-page . <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1772811392> a :auction . <http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1772811392> a :car . and in OWL we can say that things which are web-pages are not cars: :car owl:disjointWith :web-page . so an OWL reasoner can detect when a certain term is being used "out of context" as it were. At some point in the future we might teach machines to reason using different contexts but for the moment, we must assume a specific context and draw conclusions. Jonathan
Received on Thursday, 10 October 2002 07:48:47 UTC