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RE: RDF/XML Syntax Specification (Revised) 2002-03-25

From: Manos Batsis <m.batsis@bsnet.gr>
Date: Thu, 28 Mar 2002 09:57:06 +0200
Message-ID: <E657D8576967CF448D6AF22CB42DD26908BEAC@ermhs.Athens.BrokerSystems.gr>
To: "Dave Beckett" <dave.beckett@bristol.ac.uk>
Cc: "RDF Comments" <www-rdf-comments@w3.org>
Nice work. I liked the way this paper evolves it's approach to tidy
everything together, particularly going through the XML Infoset view of
things and the addition of xml:base which, IMHO, is valuable as a formal
way to interchange ontologies along with a basic context/scope (hey, I
managed to use two dangerous terms at the same time) for their
internals.

The only parts that caught my eye while briefly going through the text
yesterday:

3 Data Model
-------------------
Namespace Information Item is said to be "Not Used". How can this be
true?
Although RDF uses more narrow semantics on top of XML Names, the
information of the namespaces as defined by the Infoset is used through
both Element and Attribute Information Items; more specifically, 
[prefix] and [namespace name] as defined by the Namespace Information
Item definition are seen through both (Document)Element and Attribute
Information Items.

Kindest regards,

Manos



> -----Original Message-----
> From: Dave Beckett [mailto:dave.beckett@bristol.ac.uk] 
> Sent: Monday, March 25, 2002 10:07 PM
> To: www-rdf-interest@w3.org
> Subject: RDF/XML Syntax Specification (Revised) 2002-03-25
> 
> 
> 
> I'm pleased to announce that the 3rd RDF/XML syntax working draft
> developed by the W3C RDF Core Working Group has been published:
> 
>   RDF/XML Syntax Specification (Revised)
>   W3C Working Draft 25 March 2002
> 
>   http://www.w3.org/TR/2002/WD-rdf-syntax-grammar-20020325/
> 
> This document defines an XML syntax for the RDF as amended and
> clarified by RDF Core from that originally described in the RDF Model
> & Syntax document. The syntax is now updated to be based on the XML
> Information Set and XML Base.
> 
> For each part of the syntax a mapping is given for
> generating the RDF graph, as defined in:
>   RDF Model Theory
>   http://www.w3.org/TR/rdf-mt/
> and this mapping is done using the N-Triples graph-serializing test
> format which enables a precise recording of the mapping in a
> machine processable and testable form.  These tests are gathered and
> published in:
>   RDF Test Cases
>   http://www.w3.org/TR/rdf-testcases/
> 
> 
> The main changes in this version are:
> 
>  * The document handles the majority of the syntax in RDF M&S
>    and the graph generation rules are considered mostly complete.
>  * The completion of the rules for generating the graph for rdf:bagID
>  * Rules for handling xml:lang with literals added.
>  * Rules for handling XML Literals (not yet complete) from
>    rdf:parseType="Literal".
>  * The addition of XML Base support.
>  * An updated introduction with new examples.
> 
> along with many other changes after RDF Core decisions made since the
> last draft.  Detailed changes are listed in the document at:
> http://www.w3.org/TR/2002/WD-rdf-syntax-grammar-20020325/#sect
ion-Changes

 The previous drafts also contained changes to the syntax, in
particular:

  * Removal of aboutEach and aboutEachPrefix
  * Requiring namespace prefixes on all elements and attributes

The RDF Core WG encourages feedback and comments, especially with
regard to how the changes affect existing implementations and
content.  Comments should be sent to the public mailing list
www-rdf-comments@w3.org and an archive of the comments is available
at http://lists.w3.org/Archives/Public/www-rdf-comments/

Dave
Received on Thursday, 28 March 2002 02:57:25 GMT

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