- From: Ivan Herman <ivan@w3.org>
- Date: Wed, 25 Feb 2009 12:37:13 +0100
- To: Frank van Harmelen <Frank.van.Harmelen@cs.vu.nl>
- CC: public-owl-comments@w3.org
- Message-ID: <49A52D69.5040809@w3.org>
To: Frank van Harmelen <Frank.van.Harmelen@cs.vu.nl> CC: public-owl-comments@w3.org Subject: [LC response] To Frank van Harmelen Dear Frank, Thank you for your comment <http://lists.w3.org/Archives/Public/public-owl-comments/2009Jan/0037.html> on the OWL 2 Web Ontology Language last call drafts. We also note the 'addendum' to your original comment in <http://lists.w3.org/Archives/Public/public-owl-comments/2009Feb/0014.html> And we thank you for helping us avoiding further confusion on this issue. It is important to note that nothing changed on the RDF side, and that the treatment of anonymous individuals in OWL 2 is fully backwards compatible with that in OWL 1. Even on the structural syntax side, there is no change in expressive power, but we restructured the syntax to be in closer correspondence with RDF graphs to make it clearer that anonymous individuals are in direct correspondence with blank nodes. In the example you mentioned, for example, the "_:1" simply represents a blank node in the RDF graph, and this is indeed the only syntactic means to define a blank node. We agree this isn't made very clear in the documents, and we will try to improve the presentation. For example, we plan to add some explanatory text into the New Features and Rationale document on the change of syntax. We hope this answers your concerns on this particular issue. Please acknowledge receipt of this email to <mailto:public-owl-comments@w3.org> (replying to this email should suffice). In your acknowledgment please let us know whether or not you are satisfied with the working group's response to your comment. Regards, Ivan Herman on behalf of the W3C OWL Working Group -- Ivan Herman, W3C Semantic Web Activity Lead Home: http://www.w3.org/People/Ivan/ mobile: +31-641044153 PGP Key: http://www.ivan-herman.net/pgpkey.html FOAF: http://www.ivan-herman.net/foaf.rdf
Received on Wednesday, 25 February 2009 11:38:39 UTC