- From: Dan Connolly <connolly@w3.org>
- Date: 17 Dec 2001 11:35:57 -0600
- To: pfps@research.bell-labs.com
- Cc: www-archive@w3.org, fps@research.bell-labs.com, phayes@ai.uwf.edu, jjc@hplb.hpl.hp.com, Frank.van.Harmelen@cs.vu.nl, horrocks@cs.man.ac.uk, mdean@bbn.com, lynn.stein@olin.edup
On Mon, 2001-12-17 at 11:19, Peter F. Patel-Schneider wrote: > Datatypes in SWOL > > Peter F. Patel-Schneider > Bell Labs Research > (17 December 2001) > > > The semantics and syntax documents that I sent out contain a treatment of > datatypes that has the following features. > > 1/ Local datatyping syntax (and verification) can be handled by XML Schema > verification. In particular, > > <Person rdf:about="John"> > <age xsi:type="xsd:int">10</age> > </Person> > > results in the age of John being the integer 10. Where is the specification of that syntax? It doesn't mean what you suggest it means when parsed as RDF. > There are some problems and questions that remain, however, particularly > with respect to using XML Schema datatypes. > > 1/ How can constructed XML Schema datatypes be referenced? > > 2/ Who will build an XML Schema system that has the extra interfaces > required by this way of handling datatypes? There are a couple of > tricky parts in the interface having to do with determining that the > only possible denotation of a numeral as an integer is the usual one, > and similar issues for the other datatypes. > > 3/ Will the RDF Core WG come up with a specification that is compatible > with this general way of handling datatypes? > > > > > Action Items for the Clean-Up Task Force: > > [Relevant comments from other WG members are welcome.] > > 1/ Determine if you disagree with the following: > - The above is a reasonable way of handling datatypes in SWOL. nope; it's very much more complex, syntacitcally and in the model theory, than other alternatives under discussion in the RDF Core WG. > - The above does not introduce other problems. > > 2 (optional)/ Make suggestions for improvements. See Melnick's work in the RDF Core WG: http://www-db.stanford.edu/~melnik/rdf/datatyping/ > > Schedule: > > 7 January 2002: final document for face-to-face discussion -- Dan Connolly, W3C http://www.w3.org/People/Connolly/
Received on Monday, 17 December 2001 12:37:28 UTC