[Rsiena-help] Warnings "standard deviation is zero" in RSiena 1.1.-232 but not in RSiena 1.1-212

[Ruth Ripley]

Dear Mark,

I am just guessing, but it could be that the message is coming from the
new Dolby option. Try setting Dolby off by dolby=FALSE in
sienaAlgorithmCreate (or sienaModelCreate).

Regards,

Ruth

On 26/06/2014 22:01, Mark Manger wrote:
> Dear Tom, fellow RSiena users,
> 
> A small RSiena problem to resolve between World Cup matches:  I may have
> stumbled upon a bug/version conflict/problem of sorts with RSiena. I'm
> estimating model with two sets of one-mode networks.
> 
> The model can be estimated fine with R 2.15.3 and RSiena RSiena_1.1-212
> on my Mac running Mavericks, including using the parallel package. I've
> built RSiena_1.1-212 from source when downgrading to identify the
> potential problem, but it definitely worked back in April last year with
> the binary as well.
> 
> In the meantime I've upgraded to R 3.1.0 and RSiena 1.1-232. Alas, the
> identical model now estimates fine until Phase 3 Iteration 1, then stops
> with the following warnings (any number from 16 to 25 warnings are
> generated):
> 
> Warning messages:
> 1: In cor(z$sf[, i], scores[, i]) : the standard deviation is zero
> 2: In cor(z$sf[, i], scores[, i]) : the standard deviation is zero
> 3: In cor(z$sf[, i], scores[, i]) : the standard deviation is zero
> 4: In cor(z$sf[, i], scores[, i]) : the standard deviation is zero
> 5: In cor(z$sf[, i], scores[, i]) : the standard deviation is zero
> 6: In cor(z$sf[, i], scores[, i]) : the standard deviation is zero
> 7: In cor(z$sf[, i], scores[, i]) : the standard deviation is zero
> 8: In cor(z$sf[, i], scores[, i]) : the standard deviation is zero
> 9: In cor(z$sf[, i], scores[, i]) : the standard deviation is zero
> 10: In cor(z$sf[, i], scores[, i]) : the standard deviation is zero
> 11: In cor(z$sf[, i], scores[, i]) : the standard deviation is zero
> 12: In cor(z$sf[, i], scores[, i]) : the standard deviation is zero
> 13: In cor(z$sf[, i], scores[, i]) : the standard deviation is zero
> 14: In cor(z$sf[, i], scores[, i]) : the standard deviation is zero
> 15: In cor(z$sf[, i], scores[, i]) : the standard deviation is zero
> 16: In cor(z$sf[, i], scores[, i]) : the standard deviation is zero
> 
> etc.
> 
> Updating RSiena to 1.1.276 changes nothing, i.e. I still get the
> warnings. I also get this when estimating the model without any
> covariates and three network effects.
> 
> First, I wonder if this should lead me to question the results obtained
> with Siena 1.1-212. If not, I'd be fine just using the old version. The
> only advantage of course would be that with 1.1-276 I could use sienaRI,
> which looks extremely promising. Second, what do these warning tell me?
> The .out file looks fine to me.
> 
> —Mark
> 
> 
> *Mark S. Manger* 
> Assistant Professor of Political Economy and Global Affairs
> 
> Munk School of Global Affairs & Department of Political Science |
> University of Toronto
> Observatory Site | 315 Bloor Street West | Room 212
> Toronto, ON   M5S 0A7
> Phone: 416-946-8927 | Fax: 416-946-8877
> 
> mark.manger at utoronto.ca <mailto:mark.manger at utoronto.ca>
> *www.munkschool.utoronto.ca/mga <http://www.munkschool.utoronto.ca/mga>*
> 
> JOIN THE GLOBAL CONVERSATION
> 
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> 
> 
> 
> 
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