- From: Thomas B. Passin <tpassin@comcast.net>
- Date: Thu, 06 Jun 2002 09:30:41 -0400
- To: RDF Interest <www-rdf-interest@w3.org>
[Patrick Stickler] > > On 2002-06-06 14:08, "ext Graham Klyne" <GK@ninebynine.org> wrote: > > > > > At 11:52 AM 6/6/02 +0200, Uldis Bojars wrote: > >> Another unclear question is defining boolean values. > >> Are there some standard "TRUE" and "FALSE" or "YES" and "NO" URIs to > >> use? > > > > Something like this was discussed a while ago, and my recollection of the > > general consensus was that rdf:type can be used for describing true/false > > values by casting the property concerned as a class; e.g. the intent of: > > > > Fred isChocolateLover 'true' . > > > > can be expressed as: > > > > Fred rdf:type ChocolateLover . > > > > #g > > This is true. Or, err > > "" rdf:type True . > But does it really amount to the same thing? With TRUE/FALSE, you can say "I definitely know that Fred is NOT a ChocolateLover" (poor Fred, what he's missing!). Without it, you have to infer "I can't find anything that says that Fred IS a ChocolateLover, so he must not be one". Isn't this this similar to the existential stataus of a bnode, whose existence has to be inferred because it is connected to other nodes? Most people are saying that there really is a difference between such a node and an identified resource. So how is it that inferring FALSE is suppsed to be the same as asserting it? Cheers, Tom P
Received on Thursday, 6 June 2002 09:30:10 UTC