*****  To join INSNA, visit  *****

<<<-------- John McCreery-------->>>

> By definition 2-mode networks constructed from affiliation matrices
> production. What I am looking for, then, is a way to calculate changes in
> the expected value of network densities, given these changes.

  In most real life networks the density is decreasing when increasing
  the size (number of vertices) - often it becomes very small (because
  of limited capability of actors to link - for example Dunbar number).
  From my experience a much better quantity (which is also much
  closer to our intuition) is the average degree - in your case
  the average degrees in the first and the second set. Try to plot
  them in the plane for all your networks.

Vladimir Batagelj, University of Ljubljana, FMF, Department of Mathematics
  Jadranska 19, 1000 Ljubljana, Slovenia

SOCNET is a service of INSNA, the professional association for social
network researchers ( To unsubscribe, send
an email message to [log in to unmask] containing the line
UNSUBSCRIBE SOCNET in the body of the message.