- From: pat hayes <phayes@ai.uwf.edu>
- Date: Tue, 4 Feb 2003 17:49:00 -0600
- To: w3c-rdfcore-wg@w3.org
- Cc: pfps@research.bell-labs.com
I believe that there is a missing part of datatypes in the RDF model theory, and, moreover, that this missing part makes datatypes unusable in RDF. The missing part is a mechanism for tieing a URI reference to a datatype. ---- The MT assumes that datatypes are defined externally to RDF, and that part of this defining process involves associating a uriref with each datatype which can be used as its 'name', ie the semantic assumption is that the denotation is defined externally. I feel that this is entirely appropriate for a semantic specification, and that the general issue of how meanings can be associated with urirefs is beyond the scope of this WG. A more practical answer to this comment is that the inference rules for datatypes each specify a certain kind of information about the datatype, and clearly state that the rule can be applied only when that kind of information is somehow made available to an inference engine. Since the use of urirefs as URLs which provide access to APIs is well established on the Web, this seems to provide an clear guide to implementers as to how to proceed. I therefore propose that the WG takes no action on the basis of this comment , except possibly to refer the issue to some other authority (eg the TAG group?) Pat -- --------------------------------------------------------------------- IHMC (850)434 8903 or (650)494 3973 home 40 South Alcaniz St. (850)202 4416 office Pensacola (850)202 4440 fax FL 32501 (850)291 0667 cell phayes@ai.uwf.edu http://www.coginst.uwf.edu/~phayes s.pam@ai.uwf.edu for spam
Received on Tuesday, 4 February 2003 19:26:50 UTC