- From: Graham Klyne <Graham.Klyne@Baltimore.com>
- Date: Thu, 21 Jun 2001 15:06:15 +0100
- To: Brian McBride <bwm@hplb.hpl.hp.com>
- Cc: pat hayes <phayes@ai.uwf.edu>, w3c-rdfcore-wg@w3.org
I think it's worth acknowledging that rdf:Bag and rdf:Seq are two constructs whose intended purpose is different, but whose formalized semantics probably are not (other than whatever can taken from the name change). Lacking a general equivalence test for RDF containers (and I think the RDF core does lack such) then I don't think it's possible to capture the *intended* difference between rdf:Bag and rdf:Seq. Pat: agreeing with what I think you're saying about the semantics of these things, I think there is a "legacy" issue here: even if rdf:Bag and rdf:Seq are, for semantical purposes, pretty much interchangeable at this level of interpretation, there is software out there which will impose further semantics. I hope and expect that once the RDF core is stabilized and well-understood, further developments will allows us to capture and formalize these differences. #g -- At 12:27 AM 6/21/01 +0100, Brian McBride wrote: >pat hayes wrote: > > > > Does this > > > > <rdf:Bag> > > <rdf:li>1</rdf:li> > > <rdf:_10>10</rdf:li> > > <rdf:li>11</rdf:li> > > </rdf:Bag> > > > > ie > > _:genid <rdf:type> <rdf:Bag>. > > _:genid <rdf:_1> "1" . > > _:genid <rdf:_10> "10" . > > _:genid <rdf:_2> "11" . > > > > indicate/denote/represent a bag with three elements, or a bag with > > (at least) 10 elements, 7 of which (numbered 3 through 9) are > > unspecified? > >Ok, I'll play sucker. It represents a bag with at least the members "1", >"10" and "11". > > > > > In what way does this thing differ from the similar object gotten by > > writing 'rdf:Seq' instead of 'rdf:Bag' ? > >That would be a sequence whose 1st member was "1", whose 10th member >was "10" and whose 11th member was "11". > >Brian ------------------------------------------------------------ Graham Klyne Baltimore Technologies Strategic Research Content Security Group <Graham.Klyne@Baltimore.com> <http://www.mimesweeper.com> <http://www.baltimore.com> ------------------------------------------------------------
Received on Thursday, 21 June 2001 10:11:40 UTC