[foaf-dev] Group vs Class

Dan Brickley danbri at danbri.org
Sun Jun 13 14:59:33 CEST 2010

On Sun, Jun 13, 2010 at 2:48 PM, Dave Reynolds
<dave.e.reynolds at googlemail.com> wrote:

[useful detail snipped]
> One thing you might want to to consider is having a foaf:membershipClass
> property which links a Group to a class representing the set of members.
> That lets you keep the separation between the group and the set of people
> while using OWL machinery for supplying the set if you want to. Only valid
> in RDFS/OWL Full of course.

So my question for the wider community is to ask why
foaf:membershipClass remains largely un-used...

My suspicion is that those folk who are most into doing rich
class-centric reasoning, prefer a DL-based toolset and find FOAF and
real world FOAF data too scruffy for that environment. But I'd hope it
should be possible to take data from the messy quad-centric linked
data scene and project out clean DL-friendly chunks for class

Natural ways of grouping/classing people include by skills, employers,
roles, linkage to some focal individual (eg. "*my* co-authors), and by
geography. On Facebook or Twitter/StatusNet for example I might often
have something like an event cross my desk that I'd prefer to pass on
to a "tech people in Bristol" or "tech people in Amsterdam". There is
no way I'll maintain by hand such a people list in those sites, but
since everyone has APIs these days it is quite feasible that an
RDF/OWL based app could sort-and-categorise my contacts locally, then
push those lists up to the social network sites where they can be

Maybe these are even now still early days...?


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