- From: Antoine Zimmermann <antoine.zimmermann@insa-lyon.fr>
- Date: Mon, 23 May 2011 15:02:35 +0200
- To: public-rdf-wg@w3.org
Good. I tried to stretch this proposal in every direction to see if it's causing troubles to other specs but I couldn't. Pretty well formulated. I have a remark though: by imposing that all concrete syntaxes have syntactic sugar for xs:string-typed literals, we make xs:string a special datatype which becomes an integral part of RDF. This was not the case before. In RDF 2004, XSDs were merely mentioned as a possible example of datatype map, nothing more. "foo"^^xs:string had no specific meaning under the RDF-semantics, nor under the RDFS-semantics nor even under the D-semantics when D does not map xs:string to the corresponding XML Schema datatype. I am happy that xs:string be tightly integrated in RDF. However, I think we could go one step further by making XSDs---at least the ones mentioned in Sect.5.1 of RDF Semantics---an integral part of RDF. This means that there should be an entailment regime that includes the XSD semantics at a "low level" (maybe at the level of RDF-entailment), rather than as an extension of RDFS-entailment. This would also mean that XSDs should be presented in RDF Concept, rather than loosely referenced. In the current spec, there is no restrictions on datatype maps, such that one can define a D-entailment where the URI "xs:string" is mapped to numbers or dates or whatever. Considering the importance of XSDs, we could impose a stricter relationship between the xsd: URIs and the XML Schema datatypes. Regards, AZ Le 23/05/2011 05:01, Pat Hayes a écrit : > The proposal outlined in the wiki here > > http://www.w3.org/2011/rdf-wg/wiki/StringLiterals/LanguageTaggedLiteralDatatypeProposal > > completes Richard and my action item 48 from the last telecon. > > Pat > > > ------------------------------------------------------------ > IHMC (850)434 8903 or (650)494 3973 > 40 South Alcaniz St. (850)202 4416 office > Pensacola (850)202 4440 fax > FL 32502 (850)291 0667 mobile > phayesAT-SIGNihmc.us http://www.ihmc.us/users/phayes > > > > > > -- Antoine Zimmermann Researcher at: Laboratoire d'InfoRmatique en Image et Systèmes d'information Database Group 7 Avenue Jean Capelle 69621 Villeurbanne Cedex France Tel: +33(0)4 72 43 61 74 - Fax: +33(0)4 72 43 87 13 Lecturer at: Institut National des Sciences Appliquées de Lyon 20 Avenue Albert Einstein 69621 Villeurbanne Cedex France antoine.zimmermann@insa-lyon.fr http://zimmer.aprilfoolsreview.com/
Received on Monday, 23 May 2011 13:03:04 UTC