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Re: schema and semantics differ: range of rdf:predicate?

From: Graham Klyne <gk@ninebynine.org>
Date: Fri, 31 Oct 2003 17:57:43 +0000
Message-Id: <5.1.0.14.2.20031031175457.00bb7b18@127.0.0.1>
To: pat hayes <phayes@ihmc.us>, Brian McBride <bwm@hplb.hpl.hp.com>
Cc: w3c-rdfcore-wg@w3.org

At 09:00 31/10/03 -0600, pat hayes wrote:
>>Semantics has an rdfs axiomatic triple:
>>
>>  rdf:predicate rdfs:range rdfs:Resource .
>>
>>Schema states that the rdfs:range of rdf:predicate is rdf:Property [1].
>>
>>We should have one story here.
>
>Indeed.
>
>>  I think schema is correct.  Does that cause problems in semantics?
>
>No problem, but I seem to recall that we discussed this a while ago and 
>decided on the semantics version (which is why it is the way it is). There 
>was a reason, but I can't recall it right now.

I have a similar niggling feeling.

Brian, at some time in the past (around the time of the Bristol F2F, I 
think), you came up with a simple test case related to reification that 
meant that some otherwise reasonable restrictions were 
problematic.  Unfortunately, I don't recall the test case or the 
conclusion, but I'm wondering if it might be related.

#g


------------
Graham Klyne
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Received on Friday, 31 October 2003 13:27:25 EST

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