[R] Social Network Analysis

Robert Gentleman rgentlem at fhcrc.org
Mon May 14 16:19:57 CEST 2007

the packages graph and RBGL from the Bioconductor project have some 
reasonable subset of tools for SNA type analyses (and a lot of other 

Gabor Csardi wrote:
> 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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Robert Gentleman, PhD
Program in Computational Biology
Division of Public Health Sciences
Fred Hutchinson Cancer Research Center
1100 Fairview Ave. N, M2-B876
PO Box 19024
Seattle, Washington 98109-1024
rgentlem at fhcrc.org

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