[foaf-dev] Temporal Information For Groups in FOAF

Yves Raimond yves.raimond at gmail.com
Mon Jun 7 10:48:18 CEST 2010


> I'm new to FOAF and to RDF in general so I apologise if this question
> has been answered before. I've Googled but can't seem to find what I'm
> looking for.
> In essence I'm mapping the relationships between people who have
> contributed to a theatre event.
> My current thinking is to use the Group [1] term as way to group
> together all of the people who have contributed to an event.
> The reason I'm thinking of using the Group term, as opposed to the
> Relationship vocabulary [2], is that it appears to me that the group
> structure will be more flexible and allow me to include additional
> information about the event.
> Two pieces of important information that I need to represent is a start
> and end date of the event.
> Has anyone represented temporal information in FOAF / RDF before and if
> so how did you do it?

We had a similar issue within the Music Ontology
(http://musicontology.com), where we wanted to specify time spans for
bands. We therefore created a 'Membership' event, which can have a
start and end, and which involves various people - see


> Alternatively if there is a way to use the Relationship vocabulary and
> include temporal information on the duration of the relationship, I'd be
> interested in hearing about that as well.
> Any thoughts are gratefully received.
> With thanks.
> -Corey
> [1] http://xmlns.com/foaf/spec/#term_Group
> [2] http://purl.org/vocab/relationship/
> --
> Mr. Corey Wallis
> Software Engineer, Aus-e-Stage
> Flinders University
> Tel: +61 8 8201 5818
> Email: corey.wallis at flinders.edu.au
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