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Re: OWL equivalentClass question

From: Michael Schneider <schneid@fzi.de>
Date: Sat, 14 Jul 2012 21:01:50 +0200
Message-ID: <5001C21E.8040802@fzi.de>
To: Alan Ruttenberg <alanruttenberg@gmail.com>
CC: Pat Hayes <phayes@ihmc.us>, David Booth <david@dbooth.org>, <semantic-web@w3.org>
Hi Alan!

Am 14.07.2012 19:15, schrieb Alan Ruttenberg:

> "Blank nodes do not have identifiers in the RDF abstract syntax. The
> blank node identifiers introduced by some concrete syntaxes have only
> local scope and are purely an artifact of the serialization."
>
> It is incorrect that blank notes are purely an artifact of
> serialization. In *any*  serialization that I am aware of. Please
> correct me if I am wrong.

The text you cite talks about blank node *identifiers*, the often 
crazy-looking strings that are created by Jena or the OWL API to 
represent  blank nodes, and which often happen to be different after an 
RDF graph is parsed from a file and then written back to another file.

The text does not talk about the blank nodes themselves, which are part 
of the abstract model of RDF.

Cheers,
Michael

PS: The next one to send a reply might consider changing the subject. :-)

--
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Dipl.-Inform. Michael Schneider
Research Scientist, IPE / WIM

FZI Forschungszentrum Informatik
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michael.schneider@fzi.de
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Received on Saturday, 14 July 2012 19:02:15 UTC

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