Re: draft public comment for OWL last call from RIF

I'm not current on the OWL spec so I don't know exactly what you mean by 
"support" here.  RIF does allow for user-defined datatypes.  The RIF BLD 
conformance clause paramaterizes RIF conformance wrt a set of supported 
datatypes, however RIF does not provide any particular mechanism for defining 
them, I guess we've been assuming users would use xsd for that.


Bijan Parsia wrote:
> Another key point.
> AFAICT, RIF does not support user defined datatypes. OWL does. This is 
> one reason we are more sanguine about adding the additional derived 
> types of xs:string.
> Thus, unless you want to add user defined datatypes (or I'm mistaken 
> about that!) it is futile.
> Cheers,
> Bijan.

Dr. Christopher A. Welty                    IBM Watson Research Center
+1.914.784.7055                             19 Skyline Dr.                           Hawthorne, NY 10532

Received on Monday, 26 January 2009 15:42:32 UTC