- From: Peter Patel-Schneider <pfpschneider@gmail.com>
- Date: Tue, 26 Feb 2013 11:33:05 -0800
- To: Guus Schreiber <guus.schreiber@vu.nl>
- Cc: RDF WG <public-rdf-wg@w3.org>
- Message-ID: <CAMpDgVwtLgfCTWaH7rbuAW+09dO6VzbCiV1pXC2M_dXnRJNpUA@mail.gmail.com>
Fix 4: 4/ Revert LV to its previous behaviour. peter On Tue, Feb 26, 2013 at 11:30 AM, Peter Patel-Schneider < pfpschneider@gmail.com> wrote: > Things to think about wrt the semantics: > > 1/ Ill-typed literals no longer denote. > Decided by a WG vote (pointer?), so OK, but this is the main change, so > it should be well documented. > 2/ LV is the union of all recognized datatype value spaces. > No visible changes in RDF/S/D, I think, but has visibility in OWL, > e.g., an > instance of rdfs:Literal would have to belong to one of the recognized > datatypes. This would be non-monotonic with respect to adding more > datatypes. > 3/ Status of simple interpretations where, e.g., > IL("aaa"^^xsd:string) = "sss" > These are possible, but then break down in a strange way when looking at > the semantic conditions for ground graphs. They are not > {xsd:string}-interpretations. > > Proposed fixes: > > 1/ Move built-in literals out of simple semantic conditions for ground > graphs. Does anyone use simple semantics? > 2/ "Fix" datatypes, allowing other datatypes that have language tags (but > no RDF syntax would permit them). This makes rdf:langString a regular > datatype. This would allow, for example, internationalized numerics, > i.e., "123,1"@fr^^xsd:decimal. (Well maybe not using xsd:decimal, but you > get the idea.) Is this too radical for this late in the game? However, > who would notice if the change is only made in Semantics, without a > corresponding change in Concepts? > 3/ Make RDF interpretations be {rdf:XMLLiteral, rdf:HTML, rdf:langString, > xsd:string}-interpretations (as they are now in Semantics, but I do seem to > remember something about rdf:XMLLiteral not being part of RDF any more). > > peter > > > > > >> On 26-02-13 16:46, Guus Schreiber wrote: >> >>> See: >>> >>> http://www.w3.org/2011/rdf-wg/**wiki/Meetings:Telecon2013.02.**27<http://www.w3.org/2011/rdf-wg/wiki/Meetings:Telecon2013.02.27> >>> >>> Main agenda items: >>> - admin Turtle comments & tests (short) >>> - road to FPWD for Semantics >>> - road to LC for Concepts >>> - reviewers for JSON-LD draft >>> >>> Guus >>> >>> >> >
Received on Tuesday, 26 February 2013 19:33:32 UTC