- From: Richard H. McCullough <rhm@cdepot.net>
- Date: Wed, 20 Nov 2002 14:32:40 -0800
- To: <www-rdf-interest@w3.org>, "David Menendez" <zednenem@psualum.com>
- Message-ID: <000b01c290e4$bd09e240$bd7ba8c0@rhm8200>
Re: RDF vocabulary definitionsI guess I don't understand the real meaning of RDF-MT. Can you give me a definition of "instance", "individual", and "subclass" in English? ============ Dick McCullough knowledge := man do identify od existent done knowledge haspart list of proposition ----- Original Message ----- From: David Menendez To: Richard H. McCullough ; www-rdf-interest@w3.org Sent: Wednesday, November 20, 2002 2:16 PM Subject: Re: RDF vocabulary definitions At 1:31 PM -0800 2002-11-20, Richard H. McCullough wrote: David I appreciate your effort. I'm afraid I was erroneously venting my frustration on you. I apologize for that. Apology accepted. I have been frustrated in my attempts to pin down the meaning of "Class". There are so many documents that I have trouble finding one which addresses my concerns, and almost as much trouble re-finding it later. Something for the working group to consider, I imagine. One problem is that the "official" documents are out of date and/or inaccurate. Just referring to your summary, perhaps you didn't recognize one of its consequents: hasSex type Property implies Property subClassOf Class I believe you mean: eg:hasSex rdf:type rdf:Property. implies rdf:Property rdf:type rdfs:Class. I wrote that rdf:Property and rdfs:Class are instances of rdfs:Class. I(rdf:Property) is in ICEXT(I(rdfs:Class)) I(rdfs:Class) is in ICEXT(I(rdfs:Class)) This is not the same as saying they are subclasses of rdfs:Class. ICEXT(I(rdf:Property)) subset of ICEXT(I(rdfs:Class)) # probably not true ICEXT(I(rdfs:Class)) subset of ICEXT(I(rdfs:Class)) As it happens rdfs:Class is a subclass of rdfs:Class, but nothing in RDFS suggests that rdf:Property is a subclass of rdfs:Class. If you're seeing something in what I wrote that implies that rdf:Property is a subclass of rdfs:Class, please point it out to me. -- Dave Menendez - zednenem@psualum.com - http://www.eyrie.org/~zednenem/
Received on Wednesday, 20 November 2002 17:32:43 UTC