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Re: What are literals?

From: pat hayes <phayes@ai.uwf.edu>
Date: Fri, 13 Dec 2002 10:11:01 -0600
Message-Id: <p05111b04ba1fb64361bc@[]>
To: "Patrick Stickler" <patrick.stickler@nokia.com>
Cc: w3c-rdfcore-wg@w3.org

>[Patrick Stickler, Nokia/Finland, (+358 40) 801 9690, 
>----- Original Message -----
>From: "ext Brian McBride" <bwm@hplb.hpl.hp.com>
>To: "pat hayes" <phayes@ai.uwf.edu>; "Patrick Stickler" 
><patrick.stickler@nokia.com>; <danbri+rdfs@w3.org>
>Cc: <w3c-rdfcore-wg@w3.org>
>Sent: 12 December, 2002 18:53
>Subject: Re: What are literals?
>>  At 10:11 12/12/2002 -0600, pat hayes wrote:
>>  [...]
>>  >Yes, this text has my mind reeling. My understanding of the reification
>>  >vocabulary was that the rdf:subject and rdf:object of a reified triple
>>  >were the things that the subject and object of the original triple
>>  >denoted. In which case the rdf:object is always a literal VALUE rather
>>  >than the literal itself, so yes, indeed, it can be said to be in
>>  >rdfs:Resource. So the range is rdfs:Resource, and this should be altered.
>>  The vocab doc needs work.  It will get it.  Stick to what we have decided
>>  and expect it to come into line.
>Right. The point was simply to confirm that we all agree that
>     rdfs:Literal rdfs:subClassOf rdfs:Resource .
>and secondly, if that's the case, that perhaps the MT should say
>so explicitly.

There is now a sentence about subsets of rdfs:Resource generally, in 
section 3.3:

Since ICEXT(I(rdfs:Resource)) is the universe, everything has 
rdfs:Resource as an rdf:type value, and every class is a subclass of 
rdfs:Resource.Such assertions would be redundant, therefore.

Similarly, some domain and range assertions are omitted from the 
above table; in those cases, the domain or range of the property may 
be taken to be rdfs:Resource, i.e. the universe; such range and 
domain assertions are essentially vacuous.

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Received on Friday, 13 December 2002 11:11:11 UTC

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