[foaf-protocols] Person <-> Group (+sub/related groups) relations...

[Dan Brickley]

On 25 September 2011 12:40, Sebastian Tramp
<tramp at informatik.uni-leipzig.de> wrote:
> On Sun, Sep 25, 2011 at 10:23:01AM +0200, elf Pavlik wrote:
>
>> I work more and more with sites for online communities, recently I
>> look how to take advantage of FOAF for representing structure of
>> membership in groups and subgroups plus relation between groups/sub.
>
> Hi pavlik, foaf itself lacks a isMemberOf poperty. We use
> http://open.vocab.org/terms/isMemberOf instead.

Can you elaborate on why you need a relationship named in this
direction? Rather than myGroup having a :member link to a person?

> There is a proposal to add this to the relationship vocab:
> http://wiki.foaf-project.org/w/Using_Relationship_vocabulary
>
> but Ian Davis and Eric Vitiello Jr did not changed that so far ...
>
> using the the member relation in your own webid is imho not a good idea,
> because some clients filter out statements which are not in the cbd of
> the linked data resource ...

Clients that assume property naming direction is important are broken
and should be fixed. Whether we write:

book1 author person2 .

or

person2 wrote book1 .

... shouldn't matter; they are both 'about' the book and the person equally.

>> Going further how could I state relations between groups? Very often
>> in group profile it has related groups and subgroups as for example
>> this one (sidebar): https://n-1.cc/pg/groups/7826/lorea/

> In OntoWiki [1], we use our own subgroup relation for that since I didnt find
> any useful vocab too here ...
>
> ST

Yes, inter-group relations are an interesting area to explore further.

There are also vocabs eg. around Organizational modelling that are
relevant here, e.g.
http://www.epimorphics.com/public/vocabulary/org.html

Dan

>  1. http://ontowiki.net
> --
> WebID: http://sebastian.tramp.name
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