- From: Peter F. Patel-Schneider <pfps@research.bell-labs.com>
- Date: 2003年5月31日 20:30:08 -0400 (EDT)
- To: www-rdf-comments@w3.org
- Message-Id: <20030531.203008.111320171.pfps@research.bell-labs.com>
It occurs to me that all the closures are incomplete. For example, ex:a ex:b ex:c . ex:d ex:e ex:c . entails ex:a ex:b _:x . ex:d ex:e _:x . but that this cannot be derived in any of the closure rule sets. This means that the characterisation of the instance lemma by rules se1 and se2 is incorrect. Also, as the canonical form of an XML document is some sort of string, ex:a ex:b "2"^^rdf:XMLLiteral entails ex:a ex:b "...." where .... is the string that is the canonical form of "2". This is not however implied by the RDF closure rules. peter
Received on Saturday, 31 May 2003 20:30:17 UTC