Re: OnAgainOffAgain relations - beyond celeb marriage: Org membership

On Thu, 9 Dec 2021 at 12:58, Dan Brickley <> wrote:

> The celebrity re-marriage example is interesting and real, but may look a
> bit artificial or cornercase. A similarly structured situation is much more
> common - membership of organizations.

Cool marriages dont change!

ie as a general rule rdf is a snapshot of the 'eternal now'

otherwise you could model the changing of URIs over time and adjust inbound
and outbound links, which would be nice, but I dont think anyone has got
working, in practice

its unclear whether the machinery to do that exists right now, or that rdf
star can solve the task, without creating a leaky abstraction.  the problem
seems to be at a whole different layer.

that being said, it will be interesting to see how far it's possible to
get, as the wikidata and other use case, need to be solved

> For example one organization being a member of another.
> is the International Fact
> Checking Network (IFCN). It has a notion of membership grounded in review
> of members w.r.t. their official principles.
> Verified signatories are e.g.
> (Full Fact). There are some organizations such as Snopes (
> who were once members (verified
> signatories) but who are not currently.
> Wikidata uses annotations on a
> edge between IFCN and Snopes to give start/end times (
> 15 April 2017, 5 June 2019). It also points to evidence/source document.
> As far as I know Snopes have only been members once, but if they were to
> rejoin it seems Wikidata could accomodate the task of representing this.
> Until I learn a better name for it that isn't too grandiose, I am calling
> these "on again, off again" relationships, in honour of the celebrity
> marriage/divorce usecase.
> Dan
> p.s. another example, not quite notable enough for Wikidata to record:
> I ( have twice been a member of
> (AISB - Society for the Study of
> Artificial Intelligence and Simulation of Behaviour).  But then I have
> multiple times lived in the U.K., or been in various restaurants; how do we
> scope RDF-Star's applicability? Which of these are reasonable places it
> could be used for time-scoped relationships?

Received on Thursday, 23 December 2021 00:27:16 UTC