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Re: http://www.w3.org/2001/sw/BestPractices/XSCH/xsch-sw-20050127/

From: Jeff Pan <pan@cs.man.ac.uk>
Date: Fri, 4 Mar 2005 13:44:00 -0000
Message-ID: <00fd01c520c0$4a78d650$afc15882@Newton>
To: "Pat Hayes" <phayes@ihmc.us>
Cc: <public-swbp-wg@w3.org>

Dear Pat,

Thanks very much for your comments.

[...]

>>>Appendix A
>>>
>>>Might be interesting to relate the RDF/OWL definitions to the XML 
>>>definition given at the start. XML doesnt mention value spaces at 
>>>all,
>>
>>Yes it does,
> 
> Can you point me to where? I read all of the (old) XSD part 2 
> carefully looking for it.

http://www.w3.org/TR/2004/REC-xmlschema-2-20041028/#value-space


>>it doesn't define the l2v mapping as such.
>>
>>>and its use of 'facets' strongly suggests that the XML view simply 
>>>allows questions of identity to be highly contextual, in contrast 
>>>to the model-theoretic approach we used. Might be worth expanding 
>>>on this difference, which is responsible IMO for many of the 
>>>complexities and ambiguities you discuss.

In Appendix B, we use unary datatype expressions to represent user-defined XML Schema dataytpes constructed by facets; cf. Example C:

http://www.w3.org/2001/sw/BestPractices/XSCH/xsch-sw/#example_C.

Jeff

--
Dr. Jeff Z. Pan  ( http://DL-Web.man.ac.uk/ )
School of Computer Science, The University of Manchester




>>No. Feels too difficult.
> 
> OK. Maybe we should write a paper about it instead :-)
> 
> Pat
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Received on Friday, 4 March 2005 13:44:39 UTC

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