:20 PM
To: Lee, Laura
Subject: Re: Predicted values for zero-inflated Poisson
Laura Lee laura.lee at ncdenr.gov
Mon Jul 9 22:51:40 CEST 2012
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values for zero-inflated Poisson
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Thanks for your reply. I do have a copy of Zero Inflated Models and
Generalized Linear Mixed Models with R and have been
I want to predict the number of turtles for different levels of effort and
combinations of covariates. So, for my dataset from which I built the model,
would I compare sum(predict(ZIP,type=response)) to the observed bycatch to
compare numbers? In order to predict for the new data (called effort),
*Laura Lee* laura.lee at ncdenr.gov
mailto:r-help%40r-project.org?Subject=Re%3A%20%5BR%5D%20Predicted%20values%20for%20zero-inflated%20PoissonIn-Reply-To=%3C1341937636301-4636016.post%40n4.nabble.com%3E
/Tue Jul 10 18:27:16 CEST 2012/
Alain-
Thanks again for your reply. Yes, the offset for effort is only in the count
part of the model. Sorry I wasn't clear about why I was using 'sum'...my effort
data set contains records of trips with the effort given for each trip. I
thought using sum would get me the total number of
Hi all-
I fit a zero-inflated Poisson model to model bycatch rates using an offset term
for effort. I need to apply the fitted model to a datasets of varying levels of
effort to predict the associated levels of bycatch. I am seeking assistance as
to the correct way to code this.
Thanks in
Lee, Laura wrote
Hi all-
I fit a zero-inflated Poisson model to model bycatch rates using an offset
term for effort. I need to apply the fitted model to a datasets of varying
levels of effort to predict the associated levels of bycatch. I am seeking
assistance as to the correct way to
Thanks for your reply. I do have a copy of Zero Inflated Models and
Generalized Linear Mixed Models with R and have been using that as a guide.
I applied the predict function (type=count) to the dataset for which I
built the model to compare the predicted bycatch numbers to the observed to
ensure
Laura Lee laura.lee at ncdenr.gov
Mon Jul 9 22:51:40 CEST 2012
Previous message: [R] Predicted values for zero-inflated Poisson
Next message: [R] Lavaan Package - How to Extract Residuals in Data Values
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Thanks for your
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