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Re: st: Nested design problem


From   David Hoaglin <[email protected]>
To   [email protected]
Subject   Re: st: Nested design problem
Date   Fri, 16 Nov 2012 10:13:18 -0500

Hi, Steven.

Thanks for the additional information.  It wasn't clear whether you
had a directed graph or an undirected one.  If closeness is observed
for a pair, I don't see what makes the graph directed.  If the data on
closeness are actually for ordered pairs, the graph would be directed.

In any event, you may be able to approach your data as a social
network.  I have not followed work in that area, but I can mention two
references that should give you a start:

P. W. Holland and S. Leinhardt (1981).  An exponential family of
probability distributions for directed graphs.  Journal of the
American Statistical Association, 76:33-50.

S. Wasserman and K. Faust (1994).  Social Network Analysis.  Cambridge
University Press.

Stan Wasserman has done considerable work on analysis of data from
social networks, and you should be able to find his papers (or even
contact him directly).

When you have arrived at a reasonable model, some of the people on
this list may be able to suggest ways of implementing it in Stata.

David Hoaglin

On Fri, Nov 16, 2012 at 7:32 AM, Steven Raemaekers <[email protected]> wrote:
> Hello David,
>
> Thanks for your response! You can view the connections between people as a directed graph, with arbitrary arrows between people when they have a connection.
> There is not a value for each possible pair of people, a lot of connections are missing and are then considered irrelevant, but I'm only interested in the subjects which have connections to other people so this should not be a problem.
>
> Maybe it is indeed an analysis problem because I have already collected the data and I already know my research question. Then the question becomes more how to choose a statistical model that does most justice to reality.
>
> Regards,
>
> Steven
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