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Re: "Datatyping for Dummies" (or Occam's Razor Slash Fest)

From: Patrick Stickler <patrick.stickler@nokia.com>
Date: Sat, 23 Feb 2002 20:14:14 +0200
To: Pat Hayes <phayes@ai.uwf.edu>
CC: RDF Core <w3c-rdfcore-wg@w3.org>
Message-ID: <B89DA896.F6C7%patrick.stickler@nokia.com>
On 2002-02-22 19:39, "ext Pat Hayes" <phayes@ai.uwf.edu> wrote:

>>>>     The bNode _:1 denotes the value but *NOT* 34
>>>  ??? What is the value, if not 34?? It has to denote SOMETHING.
>> See above. It can never be made explicit in the MT that the
>> value actually *is* 34. Only that the bNode denotes a single,
>> specific value, whatever the datatype mapping says it is.
> So what does it denote if there is no datatyping information? A
> single, specific value that could be any value?

No. The single specific value that is obtained by the mapping
from that lexical form as defined for the specific datatype.

If the pairing is (xsd:integer,"34") then the value denoted
is 34. 

But the knowledge needed to actualy get to 34 is extra-RDF knowledge
and therefore all that the RDF semantics can provide is the pairing,
not the actual value.

Yet the pairing of lexical form and datatype *do* map to a single
specific (though unknown to RDF) value.


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, 23 February 2002 13:28:14 UTC

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