- From: Mike Smith <msmith@clarkparsia.com>
- Date: Wed, 15 Oct 2008 12:32:23 -0400
- To: "Peter F. Patel-Schneider" <pfps@research.bell-labs.com>
- Cc: public-owl-wg@w3.org
On Mon, Oct 13, 2008 at 12:37, Peter F. Patel-Schneider <pfps@research.bell-labs.com> wrote: > There has been some discussion of whether OWL can use XSD's new datatype > dateTime with required timezone, because our notion of equality derives > from the timeline for time, not the XSD 7-value internal data structure > for xsd:dateTime. However, our notion of equality *is* the notion of > equality used in XSD for dateTime values with a required timezone, and > thus retains compatibility with XSD. Has the XML schema group changed the semantics such that identity and equality are the same? The test case at [1] is consistent because with owl:dateTime, equality and identity are the same. If we were to adopt the timezone dependent notion of identity, the ontology in the test case would be inconsistent. -- Mike Smith Clark & Parsia [1] http://www.w3.org/2007/OWL/wiki/TestCase:Datatype-DateTime-001
Received on Wednesday, 15 October 2008 16:32:59 UTC