[statnet_help] statnet package: 'stergm'-code, but R calculates a TERGM

[Marcel Dick]

Dear statnet team, dear colleagues,


My name is Marcel Dick and I am doing an external doctorate in social  
sciences at the University of Cologne. Among other things, I am  
working with R and your statnet package.

I would like to investigate networks in school classes at two  
different points in time t1 and t2 using Separable Temporal  
Exponential Random Graphs (STERGMs). I used example 3 from the paper  
by Mr. Krivitksy and Mr. Goodreau of the statnet development team  
"STERGM - Separable Temporal ERGMs for modeling discrete relational  
dynamics with statnet" from 2016 (pp. 19-23). I have taken and adapted  
the code for the STERGM as shown in the example. The STERGM runs  
through, but R calculates a TERGM and also gives me such an output, so  
that I do not get separate information for a formation model and a  
dissolution model under 'summary()'. I have attached a corresponding  
screenshot.

I have already talked to my supervisors but they are just as perplexed  
as I am as to why R calculates a TERGM although the command contains a  
STERGM and this code runs through without an error message. Is this  
perhaps a bug or is the problem already known? If so, how can I solve  
the problem so that R really calculates a STERGM?

In the TERGM workshop on the statnet package I can only find a short  
appendix on STERGMS.

Many thanks for your help!


Best regards
Marcel Dick

________________________________________

Marcel Dick, M.Ed., M.A.
ext. Promovend

Universität zu Köln
Humanwissenschaftliche Fakultät
Department Erziehungs- und Sozialwissenschaften
Lehrbereich Sozialwissenschaften mit den Schwerpunkten  
Politikwissenschaft, Soziologie und Ökonomische Bildung
Lehrstuhl für Erziehungs- und Kultursoziologie / Soziologie

E-Mail: marcel.dick at smail.uni-koeln.de
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Krivitsky+Goodreau_2016_STERGM.pdf
Type: application/pdf
Size: 637449 bytes
Desc: not available
URL: <http://mailman13.u.washington.edu/pipermail/statnet_help/attachments/20231115/936f996f/attachment.pdf>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: R-output_summary('object')_object='STERGM_pos'_2023-11-15.jpg
Type: image/jpeg
Size: 442565 bytes
Desc: not available
URL: <http://mailman13.u.washington.edu/pipermail/statnet_help/attachments/20231115/936f996f/attachment.jpg>