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Re: Comments on informal meaning of the RDFS vocabulary

From: Jos De_Roo <jos.deroo@agfa.com>
Date: Wed, 29 Jan 2003 21:39:13 +0100
To: pfps@research.bell-labs.com
Cc: bwm@hplb.hpl.hp.com, www-rdf-comments@w3.org, www-rdf-comments-request@w3.org
Message-ID: <OF98CC6359.617725B3-ONC1256CBD.006C82AF-C1256CBD.00717541@agfa.be>

[sorry to reply again...]

> For example,
>          ex:Cretan rdf:subClassOf ex:Person .
>          ex:Cretan rdfs:comment "All Cretans are liars" .
> would mean that the model theoretic consequences of
>          ex:John rdf:type ex:Cretan .
> would include that John is a liar.

Not when you write that as ex:John rdf:type ex:Liar.
"All Cretans are liars" is just a plain literal

           A plain literal is either
           * a Unicode string in Normal Form C
           * a pair of such a string and a language tag

and is opaque to any likely RDF inference engine
but *can* be carried by formal entailments

-- ,
Jos De Roo, AGFA http://www.agfa.com/w3c/jdroo/
Received on Wednesday, 29 January 2003 15:40:11 UTC

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