W3C

– DRAFT –
RDF-star Semantics TF

08 March 2024

Attendees

Present
AndyS, enrico, gkellogg, ora, pchampin, pfps, Souri, TallTed, tl
Regrets
-
Chair
-
Scribe
ora

Meeting minutes

<pchampin> can only stay until the end of the hour, though

<TallTed> "subject term", "predicate term", "object term", "triple term"?

<pchampin> <#pa> a schema:Person .

<pchampin> Depending on the context, I can call #pa an identifier/IRI, a node of the RDF graph, a person.

<Souri> For example, for PG audience, I could choose to say: An atomic reification associates a name with a (set of) directed, labeled edge(s).

GOFR = "Good Old-Fashioned Reification" (pronounce like "gopher"?)

<AndyS> "gopher it"

<pchampin> [] rdf:subject [].

<TallTed> perhaps instead of talking about "triple term", we could talk about rdf:triple alongside rdf:subject, rdf:predicate, rdf:object. "triple occurrence" remains hard for me to get a grip on.

<Souri> For example, for PG audience, I could choose to say: [refined a bit] Using atomic reification(s), a name may be associated with a (set of) directed, labeled edge(s).

<AndyS> https://github.com/w3c/rdf-star-wg/wiki/RDF%E2%80%90star-semantics:-option-3

<enrico> https://github.com/w3c/rdf-star-wg/wiki/RDF%E2%80%90star-semantics%3A-option-3

<AndyS> :e rdf:reifies <<(:s :p :o)>> .

<AndyS> https://lists.w3.org/Archives/Public/public-rdf-star-wg/2024Feb/0066.html

<Souri> [Simplified message to PG audience] A single atomic (well-formed?) reification (using a single rdf:reifies triple) associates a (single) name to a (single) directed, labeled edge. One can always use multiple rdf:reifies triples to implement many-to-many associations.

<pchampin> :richard :marriedTo :liz {| :e | |}.

<pchampin> :)

<niklasl> :e rdf:reifies <<( richard :marriedTo :liz )>>. # isn't this just a named edge (not even asserted)?

<pchampin> niklasl, indeed

<niklasl> (also +1 for the macro syntax for named and asserted)

<niklasl> (... with the caveat of the "sparql property path or" issue)

<AndyS> "upfront restricted syntax" is for defining semantics, and not a restriction on N-Triple, Turtle grammar.

<tl> << :e | :s :p :o >> a rdfs:Resource .

<gkellogg> () a rdfs:Resource .

<tl> tl-

Minutes manually created (not a transcript), formatted by scribe.perl version 221 (Fri Jul 21 14:01:30 2023 UTC).

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No scribenick or scribe found. Guessed: ora

Active on IRC: AndyS, enrico, gkellogg, niklasl, ora, pchampin, Souri, TallTed, tl