- From: Pat Hayes <phayes@ai.uwf.edu>
- Date: Wed, 20 Feb 2002 21:45:14 -0600
- To: Graham Klyne <Graham.Klyne@MIMEsweeper.com>
- Cc: w3c-rdfcore-wg@w3.org
> >(b) CC/PP, myself >(c) A defined way to constrain a property range to the lexical space >of some datatype; >e.g. for CC/PP: > > _:SomeClientComponent client-property:dpi "100" . > : > client-property:dpi rdfs:range datatype:number . OK, let me tackle this more cooly. I didn't read this kind of example as saying that a property range is constrained to a lexical space. That second triple says that the range of the property is the datatype, not the lexical space of the datatype. It doesn't mention lexical spaces anywhere, as far as I can see. I understood you to be saying that you wanted in-line uses of literals (as in the first triple) to be datatype-sensitive, ie to change their *meaning* according to the datatype information applied to the range of the property, so that this example would say that the value of client-property:dpi applied to the subject was the number one hundred. So I invented a scheme to enable you to do that. I believe this was also what Patrick wants, and what I know Peter Patel-Schneider would like, and it may also be what Brian wants, although Im not sure as I no longer know what people mean when they refer to the S-B idiom. But it seems that is not what you , Graham, want at all. You want that first triple to mean that the value of the property IS the string '100', and definitely not a number, but *in addition* to know that this string is in the lexical space of the datatype. (Right? Have I got that now?) If so, then that is yet a third possibility, and I'll have to think about how to do it. First let me check one more thing. Is it absolutely required that this information about lexical spaces must be conveyed by a triple using rdfs:range? (If so, I have no idea how to do that, and would suggest that anyone who managed to form that idea from reading any spec ever written about RDF is living in a fantasy, and their problems should not concern us.) Or can it be conveyed in some other way? 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
Received on Wednesday, 20 February 2002 22:48:30 UTC