On Wed, 3 Apr 2013, Lia McKinnon wrote:
Dear list,
I am running some zero inflated models and would like to know what the
deviance of the models. Unlike running a normal GLM where the deviance
is displayed in the summary all that is displayed in a summary of the
zero inflated model is the log likelihood.
Zero-inflated models are not associated with a deviance in the GLM sense.
They are a mixture of two models rather than a single model from an
exponential family.
Hence, zeroinfl/hurdle in "pscl" reports the log-likelihood but not the
deviance. Possibly -2 times the likelihood is useful for you - as Ben
already pointed out.
Best,
Z
I hope this isn't a read the manual question, and if it is I apologize
for wasting your time, but if you could still send me a link of where I
might find this information I would be very grateful!
Thank you
Lia
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