- From: Misha Wolf <Misha.Wolf@reuters.com>
- Date: Fri, 23 Jun 2006 20:42:25 +0100
- To: public-rdf-in-xhtml-tf@w3.org, semantic-web@w3.org, www-tag@w3.org
I've updated this survey in the light of: - Noah Mendelsohn's mail - a conversation with Shane McCarron - a NewsML 2 Architecture WP discussion The data points presented reflect my own, incomplete, understanding. Please help by correcting the ones that are wrong and providing the missing (or additional) data points. For context, see: - RDFa Primer 1.0, 16 May 2006 http://www.w3.org/TR/2006/WD-xhtml-rdfa-primer-20060516/ - News Taxonomies presentation to the W3C AC, given on 22 May 2006 http://lists.w3.org/Archives/Public/www-archive/2006Jun/0013.html - CURIEs: A proposal, 2 June 2006 http://lists.w3.org/Archives/Public/www-tag/2006Jun/0007.html 7 Each language must specify: 7a the syntactic constraints (if any) on the prefix and suffix. XMLNS : NCNAME XHTML : prefix = any; suffix = IRI NewsML 2 : NCNameChar+ SPARQL : ? RDF/XML : ? N3 : ? Turtle : ? 7b how CURIEs and URIs are distinguished, eg through dedicated attributes or through a special syntax. XMLNS : ? XHTML : Mix of dedicated attributes and special syntax ("[a:b]") for non-dedicated attributes NewsML 2 : Dedicated attributes SPARQL : ? RDF/XML : ? N3 : ? Turtle : ? 7c the mechanism for specifying the prefix-to-IRI mapping. The mechanism may use information provided out-of-band. XMLNS : xmlns attribute XHTML : xmlns attribute NewsML 2 : scheme element SPARQL : ? RDF/XML : ? N3 : ? Turtle : ? 7d whether and, if so, how the prefix and suffix are combined to form an IRI. XMLNS : Left to each language to specify XHTML : Plain concatenation NewsML 2 : For vocabularies managed by the IPTC, we're considering: <vocabIRI> & "#_" & <code> or plain concatenation, coupled with vocabIRIs ending with "?" or "/" or "#_" For vocabularies not managed by the IPTC: Left to each vocabulary authority to specify SPARQL : ? RDF/XML : ? N3 : ? Turtle : ? 7e whether the prefix and suffix form a tuple or whether they are a compact representation for an IRI. XMLNS : Tuple XHTML : Compact representation for an IRI NewsML 2 : Tuple and compact representation for an IRI SPARQL : ? RDF/XML : ? N3 : ? Turtle : ? 7f whether the dereferencing of the IRI mapped to the prefix is required to yield a useful and relevant information resource. XMLNS : Not required, but the Architecture of the WWW states: "The owner of an XML namespace name SHOULD make available material intended for people to read and material optimized for software agents in order to meet the needs of those who will use the namespace vocabulary." XHTML : Not required NewsML 2 : Required SPARQL : ? RDF/XML : ? N3 : ? Turtle : ? 7g whether the dereferencing of the IRI built from the prefix and suffix (and, possibly, also other building blocks) is required to yield a useful and relevant information resource. XMLNS : Left to each language to specify XHTML : Yes NewsML 2 : For vocabularies managed by the IPTC: MUST For vocabularies not managed by the IPTC: SHOULD SPARQL : ? RDF/XML : ? N3 : ? Turtle : ? 7h whether any fragment identifiers in these IRIs are required to be legal XML names. XMLNS : Outside the scope of the spec XHTML : Outside the scope of the spec NewsML 2 : Yes SPARQL : ? RDF/XML : ? N3 : ? Turtle : ? Misha ------------------- NewsML 2 resources ------------------------------ http://www.iptc.org | http://www.iptc.org/std-dev/NAR/1.0 http://www.iptc.org/std-dev | http://groups.yahoo.com/group/newsml-2 To find out more about Reuters visit www.about.reuters.com Any views expressed in this message are those of the individual sender, except where the sender specifically states them to be the views of Reuters Ltd.
Received on Friday, 23 June 2006 19:53:15 UTC