- From: pat hayes <phayes@ai.uwf.edu>
- Date: Fri, 6 Jun 2003 09:09:03 -0500
- To: <jimbobbs@hotmail.com>
- Cc: <www-rdf-logic@w3.org>
> > Not sure what you mean. Certainly, it would be possible to take any >> OWL triple (Using Ntriples notation): >> >> ex:foo ex:Property ex:baz >> >> and replace it with >> >> _:x ex:Property ex:baz >> _:x owl:sameIndividualAs ex:foo >> >> and the two are equivalent. And since they are, the second form is >> kind of confusing (not wrong, but confusing) since one might easily >> think, when reading it, why didn't they just write the first one? > >I was thinking that a node is some abstract thing, and the name (URI, >QName, whatever) of a node is a property of the node. No, that was one way to understand RDF graphs, and it used to be the 'official' way, but we realized a while ago that there was really no need to distinguish between URIrefs and literals and the nodes they 'labelled', so the official line now is that in these cases the URIref or literal *is* the node. > So all nodes are >really blank; some are identified by a statement like the second N >Triple. However, I now think that is probably not be correct [1,2,3,4], Right, it is not; but... >and the OWL property, "owl:sameIndividualAs", is not suited for general >identification. ... I am not sure what you mean by that. OWL's sameIndividualAs refers to whatever the nodes denote: it doesn't refer to the nodes themselves. So for example http://www.coginst.uwf.edu/~phayes owl:sameIndividualAs phayes@ai.uwf.edu . is saying (falsely) that I am my mailbox. 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 Friday, 6 June 2003 10:09:06 UTC