[ADMB Users] glmmadmb, nbinom and alpha

[Lars Qviller]

Dear admb users.

I am trying to extract scaled residuals from a truncated negative 
binomial model using glmmadmb. I understand that it is possible to 
parameterize a negative binomial model in different ways. My two 
questions are:
Is the negative binomial dispersion parameter in the ountput the same as 
is used to scale the residuals with the formula:

(y-fitted(mod))/sqrt(fitted(mod)+ mod$alpha*fitted(mod)^2)

where "y" is the response of the fitted model "mod"?

2) is the formula correct?

-- 
Best regards
Lars Qviller
PhD student in ecology
Centre for Ecological and Evolutionary Synthesis (CEES)
University of Oslo