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Re: [closed] hendler-01 literals in parsetype collection

From: Jim Hendler <hendler@cs.umd.edu>
Date: Wed, 26 Mar 2003 21:31:39 -0500
Message-Id: <p05200f93baa8101586fe@[]>
To: Dave Beckett <dave.beckett@bristol.ac.uk>
Cc: www-rdf-comments@w3.org, Bijan Parsia <bparsia@isr.umd.edu>

  I am willing to accept this decision contingent on one thing - I 
want the issue being postponed to point to this message as well as 
(or instead of) the original message.  The reason is that, as you 
will see in a minute, I realize that the issue I raised goes beyond 
the OWL dependency which I originally discussed.

The actual issue: RDF/XML does NOT provide a reasonable syntax for 
expressing a closed list of values of literals or other datatypes.

That is, supposing I wish to represent that "my scraper found only 
the following set of names on URI1"  I wish to say something like:

<:NameList rdf:parsetype="collection">
   <rdf:closedListItem>fred </rdf:closedListItem>
   <rdf:closedListItem> joe </rdf:closedListItem>
   <rdf:closedListItem> bill </rdf:closedListItem>

(note: I have made up the above, it is not intended to be currently 
correct nor to imply this is the right syntax to use)

If I use current RDF constructs I have no way to produce this as a closed list.

In short, parsetype=collection is not only useful for the OWL oneOf 
construct, but for any other time when a closed list must be used.

I believe that it would be very useful for RDF/XML to have a means by 
which such closed lists of datatype elements could be used.

  -Jim Hendler
  AC, Mind Laboratory, University of Maryland

At 22:46 +0000 3/20/03, Dave Beckett wrote:
>You as AC Member, MIND Laboratory made a last call comment "Comment
>on rdf:parseType="Collection"" captured in
>   http://www.w3.org/2001/sw/RDFCore/20030123-issues/#hendler-01
>Your email raising the issue:
>   http://lists.w3.org/Archives/Public/www-rdf-comments/2003JanMar/0322.html
>The RDF Core WG has resolved
>   http://lists.w3.org/Archives/Public/w3c-rdfcore-wg/2003Mar/0068.html
>to postpone this issue on the grounds that:
>   * It would require extensive changes to the current syntax specification.
>   * It is not a critical requirement for the WebOnt WG.
>   * It would involve considering several different approaches, taking
>     time and consequent changes to the RDF/XML Syntax, Test Cases,
>     Primer working drafts and implementations.
>Please reply to this email, copying www-rdf-comments@w3.org indicating
>whether this decision is acceptable.

Professor James Hendler				  hendler@cs.umd.edu
Director, Semantic Web and Agent Technologies	  301-405-2696
Maryland Information and Network Dynamics Lab.	  301-405-6707 (Fax)
Univ of Maryland, College Park, MD 20742	  240-731-3822 (Cell)
Received on Wednesday, 26 March 2003 21:31:53 UTC

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