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problem with closures in RDF Semantics document (version of 6 June 2003)

From: Peter F. Patel-Schneider <pfps@research.bell-labs.com>
Date: Fri, 06 Jun 2003 23:42:04 -0400 (EDT)
Message-Id: <20030606.234204.10655865.pfps@research.bell-labs.com>
To: www-rdf-comments@w3.org

The wording for closures is not correct.

For example, rdf-closures are defined in Section 4.1 using

	Apply the rules se1 and se2 and .... to generate all RDF triples
	(i.e.[,] until none of the rules apply or the graph is unchanged.)

However, if an RDF graph contains any triples always possible to apply rule
se1 in a way that changes the graph.

This appears to indicate that the entire notion of the rdf-closure of an
RDF graph is not well defined.

Peter F. Patel-Schneider
Bell Labs Research
Lucent Technologies
Received on Friday, 6 June 2003 23:42:15 UTC

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