W3C home > Mailing lists > Public > w3c-rdfcore-wg@w3.org > June 2002

Re: new semantics initiative

From: patrick hayes <phayes@ai.uwf.edu>
Date: Fri, 14 Jun 2002 11:41:48 -0500
Message-Id: <p05111a0ab92fcb733d13@[]>
To: Patrick Stickler <patrick.stickler@nokia.com>
Cc: w3c-rdfcore-wg@w3.org
>On 2002-06-12 20:07, "ext patrick hayes" <phayes@ai.uwf.edu> wrote:
>>>  At 09:52 AM 6/12/02 +0100, Jan Grant wrote:
>>>>  Agreed; I'd rather see some syntactic mechanism for darkening (or more
>>>>  generally, colouring*) triples that doesn't rely on URI inspection. In
>>>>  particular, URI inspection doesn't need to be written into the MT
>>>>  documents - it should just appeal to darkness (or otherwise) that's
>>>>  determined through a mechanism external to the document.
>>>  Speaking personally, me too.  But that does seem to require a syntax
>>>  extension, which may be difficult at this stage.
>>  I really do NOT want to introduce a syntax extension, which
>>  introduces all kinds of extra complexity.
>I thought the MT already provided for such a distiction.

I meant, complexity in the syntax documents, Ntriples and so on. This 
whole discussion is trivial form a purely MT point of view.

>  > We have agreed that
>>  contexts are out of scope.
>I never proposed contexts.
>>  What is wrong with URI inspection?
>Because you *CANNOT* know for sure what namespace URI was used
>to generate some term URI by inspecting the term URI. That information
>is iretrievably discarded during parsing.
>Get over it folks. It can't be done. Let's please move on and
>consider other, actually possible mechanisms. OK?

Look, we must be in a disconnect here. Are you saying that when some 
software reads some RDF, that it cannot possibly tell that


is the symbol 'type' on the normative W3C website? You sure seem to 
be saying that. I bow to your expertise, but it seems to me that if 
this is true, then we are in much deeper doo-doo than anything to do 
with dark triples.

>Rather, the graph syntax should have an explicit mechanism
>that 'colors' triples as asserted or unasserted,

No, it MUST NOT have such a mechanism. Any such mechanism in the 
graph is inherently non-monotonic. This whole idea is a dead horse.


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Received on Friday, 14 June 2002 12:41:49 UTC

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