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Re: exploring ambiguity via the "something-which-has" URI scheme

From: pat hayes <phayes@ai.uwf.edu>
Date: Thu, 8 May 2003 10:52:30 -0500
Message-Id: <p05210600bae02b36efd4@[]>
To: Sandro Hawke <sandro@w3.org>
Cc: Patrick.Stickler@nokia.com, GK@ninebynine.org, uri@w3.org

>  > Even if, according to the MT, the denotation/interpretation of a
>>  given URI may differ, what counts for the SW is that those
>>  denotations/interpretations be compatible.
>>  Incompatible denotations/interpretations are what harm the SW.

Just for the record, this is nonsense as stated.  One wouldn't expect 
that two different interpretations would be compatible.  What I think 
Patrick meant is that incompatible ASSERTIONS are what harm the SW. 
That is debateable, but at least it makes sense.

>It seems to me that making use of a URI in RDF amount to an owl:import
>of the URI's associated web content pretty well solves this problem.
>It would make any incompatible use of a URI looks about the same as
>self-contradicting RDF graph.

Yes, but...

1.  There isn't any clear notion defined anywhere (AFAIK) of what is 
'the ... associated web content' of a URI. (What is the associated 
Web content of, say, rdfs:Class ?) This is precisely the ball that 
has been dropped between the SW community and the URI community. Each 
thinks that it is the other's problem.
2.  owl:import doesn't have any well-defined nontrivial semantics (yet).
3.  There is no such thing as a self-contradicting RDF graph.

So while I agree that this picture has a nice intuitive feel to it, a 
lot of work needs doing before we can make it coherent.

- Pat

>  I argued for this a while ago [1] and
>mentioned it again yesterday in e-mail which oddly is absent from the
>archives (with "KIF" in the subject).
>     -- sandro
>[1] http://lists.w3.org/Archives/Public/www-rdf-comments/2002OctDec/0043

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Received on Thursday, 8 May 2003 11:52:36 UTC

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