- From: Pat Hayes <phayes@ai.uwf.edu>
- Date: Fri, 12 Oct 2001 20:23:51 -0500
- To: Sergey Melnik <melnik@db.stanford.edu>
- Cc: w3c-rdfcore-wg@w3.org
>Pat Hayes wrote: >> >> >It looks like it is still the case that RDF/XML syntax can only >> >represent a subset of valid RDF graphs, >> >> But that, I gather, is the case more generally. >> >> >in which there are no circles >> >that contain bNodes only. If so, this limitation needs to be stressed in >> >the spec(s). >> >> Agreed. There should be a whole little essay (in the primer?) about >> the different notations and the relationships between them. >> >> >An exception handling mechanism must be specified as well. >> >> Why? Isn't it enough that there should be round-tripping from RDF/XML >> -> graph -> RDF/XML? > >There should be, but probably won't be (unless the syntax subgroup would >attack the issue e.g. by introducing an additional attribute for >referencing local bNodes). Therefore, as an implementor, I'd like to >know what to expect when I try to serialize _x --property--> _x. Well, it's easy in Ntriples, and you can't do it in RDF/XML. What more do you want? If you are working in RDF/XML, then you will never ever come across such a graph in any case, right? Actually I'm still not completely convinced that it really is impossible to say this in XML. But I need to focus on the MT for a while. 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 Friday, 12 October 2001 21:24:04 UTC