W3C home > Mailing lists > Public > w3c-rdfcore-wg@w3.org > November 2001

RE: Answer to the question: What is a "value" to RDF

From: Pat Hayes <phayes@ai.uwf.edu>
Date: Wed, 14 Nov 2001 19:40:55 -0600
Message-Id: <p05101059b818cd18dc77@[65.212.118.147]>
To: Patrick.Stickler@nokia.com
Cc: w3c-rdfcore-wg@w3.org
>  > > Well hold on. It isn't clear that there are any RDF classes
>>  denoting
>>  > datatypes, at present. In the S proposal, for example,
>>  datatype names
>>  > are RDF property names, not class names. So I do not know from what
>>  > population you are getting 'most' here.
>>
>>  Right. I stand corrected. I should have stated "Most RDF resources
>>  denoting..."
>
>Actually, I take that back.
>
>rdfs:range expects a class as its value, and I think it is
>a fairly reasonable assumption that data types are classes,
>per the semantics of subClassOf, etc. so even though it might
>not be strictly stated somewhere that data types are RDF classes,
>I think it is fair to assume they are, and perhaps it should
>be stated as such.

Well, the S proposal would have them be properties. And I have to 
admit, even though my name is on a different proposal, that this idea 
of datatypes as properties does rather better capture the intuition 
that the core notion in datatyping is a *mapping* from a lexical to a 
value space.

Pat
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Received on Wednesday, 14 November 2001 20:40:51 EST

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