[R] Social Network Analysis

[Gabor Csardi]

Tom,

check the igraph package. Although structural balance is not implemented,
for three or four nodes it might be straightforward to do a quick 
implemntation which works for small graphs. 

Btw. what is exactly you want to do? List the number of balanced and
unbalanced triangles? Ot the triangles themselves? What is a semi-cycle?
Could you point me to a good online reference about structureal balance?

Thanks,
Gabor

On Sat, May 12, 2007 at 11:44:21PM +0200, Tom Backer Johnsen wrote:
> R-Netters:
> 
> for (partial sentimental reasons) I am at the the moment working on 
> some old data of mine (actually collected 40 years ago this year for 
> my thesis) covering development of of social networks in small groups 
> over time.  These data consists of signed and directed graphs.
> 
> Apart from the programs I write myself, I am looking for R functions 
> for computing what at that time was called "Structural Balance", 
> mainly to check on my own programs, where the results are almost to 
> good to be true.  I want to limit myself to cycles (semicycles?) of 
> length two and three.
> 
> I am aware of the "network" package as well as the "sna" which do not 
> seem to quite cover what I need.  On the other hand, the terminology 
> may have changed since I looked into the field 40 years ago.  I am 
> also aware of the Pajek program and the corresponding book by Nooy, 
> Mrvrar, and Batagelj.
> 
> Any other suggestions or pointers?
> 
> Tom
> -- 
> +----------------------------------------------------------------+
> | Tom Backer Johnsen, Psychometrics Unit,  Faculty of Psychology |
> | University of Bergen, Christies gt. 12, N-5015 Bergen,  NORWAY |
> | Tel : +47-5558-9185                        Fax : +47-5558-9879 |
> | Email : backer at psych.uib.no    URL : http://www.galton.uib.no/ |
> +----------------------------------------------------------------+
> 
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-- 
Csardi Gabor <csardi at rmki.kfki.hu>    MTA RMKI, ELTE TTK