- From: Dan Connolly <connolly@w3.org>
- Date: 11 Dec 2002 14:51:38 -0600
- To: Jeremy Carroll <jjc@hplb.hpl.hp.com>
- Cc: www-webont-wg@w3.org
On Wed, 2002-12-11 at 12:54, Jeremy Carroll wrote: > > Peter wrote: [1] > [[ > 3/ OWL will include all XML Schema built-in non-list simple types, using > the canonical URI reference for them. > ]] > > Jeremy wrote: [2] > [[ > Exclude xsd:QName, xsd:ENTITY, xsd:NOTATION > ]] > > Also exclude xsd:duration, because it has no well defined canonical form, How is that a problem? As long as the mapping (from values to lexical forms) is InverseFunctional, that's all we need, no? i.e. can you make an OWL test case where this matters? > and equality is not well-defined. Could you elaborate? Equality of six-tuples is clear enough, no? "The ˇvalue spaceˇ of duration is a six-dimensional space where the coordinates designate the Gregorian year, month, day, hour, minute, and second components" -- http://www.w3.org/TR/2001/REC-xmlschema-2-20010502/#duration again, a test case would be most helpful. > Caution would suggest excluding xsd:ID and xsd:IDREF since they seem to be > about xml validation rather than lexical to value mappings. > > If we include xsd:float, xsd:double and xsd:anyURI we should be aware of > issues to do with equality that are unresolved. [3] > > Jeremy > > > [1] > http://lists.w3.org/Archives/Public/www-webont-wg/2002Nov/0265.html > [2] > http://lists.w3.org/Archives/Public/www-webont-wg/2002Nov/0278.html > [3] > http://lists.w3.org/Archives/Public/www-archive/2002Nov/att-0092/02-index > -- Dan Connolly, W3C http://www.w3.org/People/Connolly/
Received on Wednesday, 11 December 2002 15:51:26 UTC