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Open issues dealing with user defined datatypes

From: Michael Smith <msmith@clarkparsia.com>
Date: Mon, 12 Nov 2007 17:57:52 -0500
To: public-owl-wg <public-owl-wg@w3.org>
Message-Id: <1194908273.6333.103.camel@msmith-laptop>

There are two open issues with syntax of user defined datatypes in the
current documents.


The first, ISSUE-29 , regarding the in-line syntax for user defined
datatypes, questions the namespace used for the DataRange construct and
facets in the RDF/XML mapping.  It notes the decision to reuse semantics
of RDF & XSD without reusing the namespaces - an issue that needs to be
discussed before resolution.

It may be easier to leverage existing toolsets, both for reasoning and
ontology editing, if XSD syntax is re-used, but I am uncertain.


The second, ISSUE-31 , is an issue first identified with OWL 1.0 with
respect to referencing externally defined datatypes, summarized well by
Jeremy and Jeff Pan at [1].


In the interest of moving forward, I request both of these issues be
added to the next telecon agenda.

Presumably both of the resolution to each of these issues should be run
past the XML Schema WG for feedback.  Unless there is someone here with
direct ties to that WG, I'm happy to act as a liason. 

I've started a new wiki page at [2] to aggregate discussion of unary
datatype issues, starting with the two above.

At [3] I've started a wiki page for reports on reasoner support and aim
to populate it in the coming days.

Regards,
-- 
Mike Smith

Clark & Parsia

[1] http://www.w3.org/TR/swbp-xsch-datatypes/
[2] http://www.w3.org/2007/OWL/wiki/Unary_UDDT_Issues
[3] http://www.w3.org/2007/OWL/wiki/Unary_DT_Implementation
Received on Monday, 12 November 2007 22:58:06 GMT

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