- From: Graham Klyne <Graham.Klyne@MIMEsweeper.com>
- Date: Wed, 20 Feb 2002 09:13:33 +0000
- To: Pat Hayes <phayes@ai.uwf.edu>
- Cc: w3c-rdfcore-wg@w3.org
Oh dear, it's looking as if I seriously dropped the ball on this... With my CC/PP hat on I don't see the following "long-range" usage is supported: _:SomeClientComponent client-property:dpi "100" . : client-property:dpi rdfs:range datatype:number . i.e. does not define support for idiom B in the datatyping desiderata document: http://lists.w3.org/Archives/Public/www-archive/2002Jan/att-0133/00-gk.htm What also now seriously bothers me is that I can't see how the full proposal [1] supports this either. I had earlier convinced myself that this was all OK, but now I can't see it. Aaargh! I was thinking that there was a way to say that client-property:dpi rdfs:range datatype:number . expressed the property range as the lexical space of some datatype. #g -- [1] http://www.coginst.uwf.edu/users/phayes/DatatypeSummary3.html At 10:11 PM 2/19/02 -0600, Pat Hayes wrote: >Guys, Ive put up a quick draft of a simplified version of the datatyping >proposal at > > http://www.coginst.uwf.edu/users/phayes/simpledatatype > >I think this version is simple enough for the DPH. It uses the datatyping >triple idiom: > >Jenny ex:age _:x >_:x xsd:number "15" > >as primary, and treats rdfs:dlex as a kind of 'empty case' for when you >don't know the datatype, and then links rdfs:drange directly to that, so >you don't need to use rdf:dtype or the doublet form at all unless you want >to. This keeps everything simpler and also much more robust against clashes. > >BTW, notice I have NOT said that all datatype properties are subproperties >of rdfs:dlex. There isn't any need to, and that would introduce a lot more >potential clashes if we did. Also this way of doing it means that 'local' >dtypes always take priority over 'range' dtypes, which seems right. > >Anyway, for your amusement. > >Pat > >-- >--------------------------------------------------------------------- >IHMC (850)434 8903 home >40 South Alcaniz St. (850)202 4416 office >Pensacola, FL 32501 (850)202 4440 fax >phayes@ai.uwf.edu http://www.coginst.uwf.edu/~phayes ------------------------------------------------------------ Graham Klyne MIMEsweeper Group Strategic Research <http://www.mimesweeper.com> <Graham.Klyne@MIMEsweeper.com>
Received on Wednesday, 20 February 2002 04:12:06 UTC