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For a time Peter Bearman and one of his co-authors (I forget which --
maybe s/he is listening) were floating a paper on the dating (or maybe
sexual) network in a US high school, which had as one striking and
improbable finding that the largest subcomponent was a big loop,
involving maybe 100-200 people. I'm not sure what happened to it.

More relevant, perhaps, is

Bearman, Peter. 1997. "Generalized Exchange." American Journal of
Sociology 102:1383-1415.

There's some evidence in this paper of a cycle among villages sending
their women out for marriage (if I recall correctly). I remember reading
the paper and thinking, perhaps because Bearman said as much, that
cyclical exchange is the logical consequence of actors each with an
indegree of one and an outdegree of one, under the constraint that there
are no self-sufficient dyads.

DRG

Juan Manuel Larrosa wrote:

>*****  To join INSNA, visit http://www.sfu.ca/~insna/  *****
>
>Colleagues:
>I have developed with a colleague of mine an economic model of network
>formation. Results gave us circular network architecture as optimal
>structure. It means that individual are full connected but in row where the
>last one individual must be connected with the first one. A quite simple
>example could be this:
>
>          A
>           /    \
>        /    \
>       /      \
>        B-------C
>
>I've read sociological literature where this structure could be assimilated
>to a clique network, but I'm suspicious about other potential implications
>in social networks research. Does anyone remember another social network
>architecture (with real examples) where this circle form could emerge?
>Specific references are welcome...
>
>Thanks in advance,
>
>Juan
>
>
>------------------------------------------
>Juan Manuel Larrosa
>PhD Candidate
>CONICET- Universidad Nacional del Sur
>San Juan y 12 de Octubre
>Planta Baja - Gabinete 5
>(8000) Bahia Blanca
>ARGENTINA
>http://jlarrosa.tripod.com    [updated]
>
>TE (0291) 459 5101 Ext 2735
>
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