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Re: forest grammar/tree regular expression for RDF

From: Brian McBride <bwm@hplb.hpl.hp.com>
Date: Fri, 22 Jun 2001 07:39:57 +0100
Message-ID: <3B32E83D.414E1145@hplb.hpl.hp.com>
To: Jonathan Borden <jborden@mediaone.net>
CC: www-rdf-comments@w3.org, www-rdf-interest@w3.org

Thank you for this suggestion.  I have added a reference to your message
attached to the issue in the issue tracking document:


to ensure that the RDFCore WG is aware of your suggestion when it considers
this issue.


Jonathan Borden wrote:
> I hope the RDFCore WG will consider the forest grammar/tree regular
> expression as a specification of the formal RDF XML syntax. The unordered
> nature of RDF is best described as a forest grammar and this presents
> difficulties for traditional XML schema languages such as DTDs.
> I have specified this as a RELAXNG schema for RDF
> http://www.openhealth.org/RDF/RDF1.rng in terms of solidifying the RDF XML
> syntax under the issue:
> http://www.w3.org/2000/03/rdf-tracking/#rdfms-formal-grammar
> An advantage of specifying the grammar in this language is that it has a
> good formal semantics which is based on the formal semantics of XDuce.
> http://www.cis.upenn.edu/~hahosoya/xduce/ . Note that the XML Schema
> formalism in http://www.w3.org/TR/xmlschema-formal appears to be based on
> XDuce as well which is referenced.
> Because I realize the politics around RELAXNG, I have converted this to the
> language used by XDuce and by the XML Schema Formalism:
> http://www.openhealth.org/RDF/RDFSyntaxFormal.
> It is really quite simple.
> Jonathan Borden
> The Open Healthcare Group
> http://www.openhealth.org
Received on Friday, 22 June 2001 02:41:54 UTC

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