[Rsiena-help] Interaction effect specification for bipartite networks

[marco tonellato]

Dear All,

I'm currently modeling a bipartite network of 83 x 577 nodes with RSiena
(revision 0.61). I was able to estimate significant and convergent
parameters for the endogenous part and the main effects of 5 attributes
(related to either node set).

I now have a problem including interaction effects. In particular I would
like to include the interaction of a constant binary covariate (which
captures whether or not my nodes of the first mode have tenure) with the
outdegree activity.

Both using the tcl/tk initerface and entering (also with RSienaTest r62):

myeff<-includeInteraction(myeff,egoX,outActSqrt,interaction1="dev.ten",include=TRUE)

R returned this error message:

invalid interaction specification:"must be at least one ego or both dyadic
effects".

Finally, I also noticed that the "interactionType"  attribute of the tenure
egoX effect is set as dyadic, whereas it is left unspecified for all the
altX effects related to the other attributes I measured for the nodes of the
second mode.

Am I doing something wrong? What should I do to get the interaction effects
working?
Thanks a lot,

Marco
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