- From: Patrick Stickler <patrick.stickler@nokia.com>
- Date: Thu, 18 Apr 2002 20:33:47 +0300
- To: Pat Hayes <phayes@ai.uwf.edu>
- CC: RDF Core <w3c-rdfcore-wg@w3.org>
On 2002-04-18 0:21, "ext Pat Hayes" <phayes@ai.uwf.edu> wrote: >> Pat, >> >> Should the datatyping MT include the following, to specify the >> interpretation of the blank node and literal for the datatype >> property idiom? >> >> For any literal "LLL", if E contains the triples >> >> <ddd, rdf:type, rdfd:datatype> >> <bbb, aaa, ccc> >> <ccc, ddd, "LLL"> > > Is this the new Ntriples notation? (Did I miss something?) > >> then I(ccc) = L2V(I(ddd))("LLL") is defined >> >> ??? > > I think the best way to do this would be to say that there just is a > notion of a datatype, that L2V is always defined on datatypes (both > being global semantic assumptions) and the semantic condition on > rdfd:datatype is that ICEXT(I(rdfd:datatype)) contains only > datatypes. Then the rest follows from this. That would be preferable > to imposing an extra semantic condition onto rdf:type. I don't see how you are adding any semantics to rdf:type. You are simply saying that ddd is a member of the class rdfd:Datatype, and we've defined what the properties must be for all members of that class, namely a lexical space, a value space, a lexical to value mapping, etc. etc. > The corresponding API would be that whenever it finds or concludes a > triple of the form > > ddd rdf:type rdfd:datatype . > > a datatyping RDF engine ought to take the uriref <ddd> and try to > find its datatyping specification in some usable form, and complain > if it can't find it. This is all true, but... that's not actually what I was asking ;-) Rather, do we need a rule that assigns the datatype value to the bnode of the datatype property idiom? Defintion 4 does this for the lexical form idiom. It seems that there should be an analogous MT definition for the datatype property idiom. Eh? Patrick -- Patrick Stickler Phone: +358 50 483 9453 Senior Research Scientist Fax: +358 7180 35409 Nokia Research Center Email: patrick.stickler@nokia.com
Received on Thursday, 18 April 2002 14:25:51 UTC