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RE: extend rdfs:Class & rdf:Property

From: Manos Batsis <m.batsis@bsnet.gr>
Date: Fri, 11 Jan 2002 13:21:25 +0200
Message-ID: <E657D8576967CF448D6AF22CB42DD26908BDF0@ermhs.Athens.BrokerSystems.gr>
To: "Alexaki Sofia" <alexaki@ics.forth.gr>
Cc: <www-rdf-interest@w3.org>
Geia sou Sofia,

I'm no expert but, I don't find any sense in nesting

<rdfs:subClassOf
  rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>

inside

<rdfs:Class rdf:ID="MyClass">

</rdfs:Class>

It's like saying the same thing two times (please someone correct me if
I'm wrong).

Kindest regards,

Manos


> -----Original Message-----
> From: Alexaki Sofia [mailto:alexaki@ics.forth.gr] 
> Sent: Thursday, January 10, 2002 5:49 PM
> To: www-rdf-interest@w3.org
> Subject: extend rdfs:Class & rdf:Property
> 
> 
> Hello,
> 
> The 11th rule in the RDF Model Theory which states that if
> xxx rdfs:subClassOf yyy   and aaa rdf:type xxx .
> then aaa rdf:type yyy
> does this rule applies if xxx is subclass of  rdfs:Class?
> 
> More precisely, if the following facts are stated:
> the  class MyClass is subClassOf rdfs:Class and C1 is 
> instance of  MyClass
> i.e.,
> <rdfs:Class rdf:ID="MyClass">
> <rdfs:subClassOf
>   rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
> </rdfs:Class>
> 
> <MyClass rdf:ID="C1"/>
> 
> can I infer that C1 is a class? Or it is should be explicitly 
> stated in
> the RDF file that C1 is instanceof rdfs:Class?
> 
> Repsectively, if I define a class MyProperty as subclass of 
> rdf:Property
> and P1 is instance of MyProperty i.e.,
> 
> <rdfs:Class rdf:ID="MyProperty">
> <rdfs:subClassOf 
> rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
> </rdfs:Class>
> 
> <MyProperty rdf:ID="P1"/>
> can I infer that P1 is a property?
> 
> Regards,
> Sofia Alexaki
> 
> 
> 
Received on Friday, 11 January 2002 06:18:50 GMT

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