- From: pat hayes <phayes@ai.uwf.edu>
- Date: Thu, 31 Oct 2002 22:29:11 -0600
- To: "Tim Berners-Lee <timbl" <timbl@w3.org>, "Jos De_Roo" <jos.deroo.jd@belgium.agfa.com>
- Cc: w3c-rdfcore-wg@w3.org
> > >> I feel that "^^", being syntactic, should only be usable with a >> fixed set of type URIs. > >that's indeed better Well, the current position is that there isnt a *syntactic* condition to this effect (how could there be, when theres no syntactic condition on type URIs?) but that if you use a URI that the RDF engine can't resolve into a datatype, then it can't draw any datatype-type conclusions involving the literal. In effect, a typed literal with an unknown type URI is just an opaque string as far as the RDF is concerned: it knows it means something, but it has no way to find out what that is. It can infer an existential, is about all. An engine could always throw an exception if it failed to recognize an embedded dtype in a literal. Does it matter if the exception is called syntactic or datatypish? . Pat -- --------------------------------------------------------------------- IHMC (850)434 8903 home 40 South Alcaniz St. (850)202 4416 office Pensacola (850)202 4440 fax FL 32501 (850)291 0667 cell phayes@ai.uwf.edu http://www.coginst.uwf.edu/~phayes s.pam@ai.uwf.edu for spam
Received on Thursday, 31 October 2002 23:29:35 UTC