- From: pat hayes <phayes@ai.uwf.edu>
- Date: Thu, 21 Nov 2002 18:43:52 -0600
- To: "Peter F. Patel-Schneider" <pfps@research.bell-labs.com>
- Cc: w3c-rdfcore-wg@w3.org
>From: pat hayes <phayes@ai.uwf.edu> >Subject: Re: Comments on RDF Concepts and Abstract Data Model >Date: Thu, 21 Nov 2002 14:24:09 -0600 > >> >From: pat hayes <phayes@ai.uwf.edu> >> >Subject: Re: Comments on RDF Concepts and Abstract Data Model >> >Date: Wed, 20 Nov 2002 13:14:27 -0600 >> > >> >> >From: Jeremy Carroll <jjc@hpl.hp.com> >> >> >Subject: Re: Comments on RDF Concepts and Abstract Data Model >> >> >Date: Mon, 18 Nov 2002 15:59:12 +0100 >> >> > >> >> >> >> >> >> Hi Peter >> >> >> >> >> >> I am responding to some of your comment >> >> >> >> >> >> >> >>http://lists.w3.org/Archives/Public/www-rdf-comments/2002OctDec/0053.html >> >> >> >> >> >> in particular: >> >> >> >> >> >> [[ >> >> >> Major comment: >> >> >> > > >> >> The RDF graph is syntax. As such it makes no sense to >define a notion >> >> >> of equality over literals, which are pieces of syntax. >> >> >> >> Peter, why do you say it makes no sense? It makes perfect sense to >> >> me. If syntax is character strings, then equality is defined by >> >> string equality; if it is some other kind of structure, then equality >> >> is defined by other means. But it is still meaningful. >> > >> >Sure, it is possible to produce an equality relationship on syntax, and one >> >can do so without producing contradictions, but what has one achieved? >> >> Call it 'identity' if you like to avoid the potential confusions with >> equality in the language (though I havnt seen much evidence of that >> confusion in practice). BUt heres an example of the need to get this >> clear: what does it mean to be the same bnode? Its easy to slip past >> the need to be clear on this, and this has caused large amounts of >> confusion already. Purely syntactic confusion, but confusion all the >> same. >> >> Pat > >Oh, yes, I agree that this is an area where a clear definition is needed. >However, this has nothing to do with literal equality, being much more akin >to whether two tokens in the syntax of a programming language refer to the >same variable. But literals are RDF syntax. And simple literals denote themselves; so it's all the same issue. Pat -- --------------------------------------------------------------------- IHMC (850)434 8903 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 Thursday, 21 November 2002 19:44:01 UTC