[Rsiena-help] Interaction effect specification for bipartite networks

[marco tonellato]

Dear Ruth,

now that I changed the specification as 'ego' effect I could start the
model, but R then crashed.

This is the command I used and the output I got after the crash:

>
myeff<-includeInteraction(myeff,egoX,outActSqrt,interaction1="dev.ten",include=TRUE)
                                        name shortName type interaction1
collaboration.objEffects.138.1 collaboration   unspInt eval
                               interaction2 include effect1 effect2 effect3
collaboration.objEffects.138.1                 TRUE      24      17       0

> ans <- siena07(mymodel, data=mydata, effects=myeff, batch=TRUE,
verbose=TRUE, nbrNodes=3, useCluster=TRUE, initC=TRUE)

Stochastic approximation algorithm.
Initial value for gain parameter = 0.3464102.
Start of the algorithm.
Target function values are
  1.  904.00000   2.   89.00000   3. 1009.38249   4. 5637.09646   5.
-23.27556
  6.  354.12048   7.   72.53726   8.  221.19411   9.  -16.00520  10.
2756.24970
 11. 2756.24970

Start phase 0
theta: -1.55  0.00  0.00  0.00  0.00  0.00  0.00  0.00  0.00  0.00  0.00
Current parameter values:
-1.547494  0.000000  0.000000  0.000000  0.000000  0.000000  0.000000
0.000000
 0.000000  0.000000  0.000000

Start phase 1
Error in unserialize(node$con) : error reading from connection


Best regards,

Marco

On Tue, Mar 16, 2010 at 11:28 PM, Ruth M. Ripley <ruth at stats.ox.ac.uk>wrote:

> Dear Marco,
>
> Sorry, I think the information I have coded in the package is incorrect. I
> think the egoX should be an 'ego' effect not a 'dyadic': if you change
> this in your effects object it should be OK.
>
> I will fix it in the package but it will be a couple of days before it is
> available in the binary on R-forge.
>
> Regards,
>
> Ruth
> --
> Ruth M. Ripley,                         Email:ruth at stats.ox.ac.uk<Email%3Aruth at stats.ox.ac.uk>
> Dept. of Statistics,                    http://www.stats.ox.ac.uk/~ruth/<http://www.stats.ox.ac.uk/%7Eruth/>
> University of Oxford,                   Tel:   01865 282851
> 1 South Parks Road, Oxford OX1 3TG, UK  Fax:   01865 272595
>
>
> On Tue, 16 Mar 2010, marco tonellato wrote:
>
> > 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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