- From: Patrick Stickler <patrick.stickler@nokia.com>
- Date: Sat, 16 Feb 2002 21:00:40 +0200
- To: Patrick Stickler <patrick.stickler@nokia.com>, RDF Core <w3c-rdfcore-wg@w3.org>
On 2002-02-16 20:43, "Patrick Stickler" <patrick.stickler@nokia.com> wrote: >> 11. xsd:date rdf:type rdfs:Datatype . >> xsd:date rdfs:subPropertyOf rdf:lform . >> xsd:date rdfs:range _:1 . >> dc:date rdfs:range _:1 . >> xxx dc:date "2002-02-14" . > > b) the lexical space of xsd:date In case it isn't clear to some why the bNode denotes the lexical space of xsd:date, it should be pointed out that this follows from the dual nature of datatype properties and the fact that xsd:date is a subproperty of rdf:lform and rdf:lform has an implicit range of the lexical space of a datatype. Thus, from the first triple, we know xsd:date is a datatype class. From the second triple we know its range is its own lexical space. From the third and fourth triple we see that it shares the same range as dc:date, and thus the range of dc:date is the lexical space of xsd:date. And from the last triple we know that the literal is a member of the lexical space of xsd:date and thus, we can determine the TDL pairing. 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 Saturday, 16 February 2002 13:59:11 UTC