Re: [R] Lambert (1992) simulation

2012-05-06 Thread Achim Zeileis
On Sat, 5 May 2012, Christopher Desjardins wrote: Hi, I am a little confused at the output from predict() for a zeroinfl object. Here's my confusion: ## From zeroinfl package fm_zinb2 <- zeroinfl(art ~ . | ., data = bioChemists, dist = "negbin") ## The raw zero-inflated overdispersed data >

Re: [R] Lambert (1992) simulation

2012-04-27 Thread Christopher Desjardins
On Fri, Apr 27, 2012 at 1:53 AM, Achim Zeileis wrote: > On Thu, 26 Apr 2012, Christopher Desjardins wrote: > > Hi, >> I am trying to replicate Lambert (1992)'s simulation with zero-inflated >> Poisson models. The citation is here: >> >> @article{lambert1992zero, >> Author = {Lambert, D.}, >> Jour

Re: [R] Lambert (1992) simulation

2012-04-26 Thread Achim Zeileis
On Thu, 26 Apr 2012, Christopher Desjardins wrote: Hi, I am trying to replicate Lambert (1992)'s simulation with zero-inflated Poisson models. The citation is here: @article{lambert1992zero, Author = {Lambert, D.}, Journal = {Technometrics}, Pages = {1--14}, Publisher = {JSTOR}, Title = {Zero-i

[R] Lambert (1992) simulation

2012-04-26 Thread Christopher Desjardins
Hi, I am trying to replicate Lambert (1992)'s simulation with zero-inflated Poisson models. The citation is here: @article{lambert1992zero, Author = {Lambert, D.}, Journal = {Technometrics}, Pages = {1--14}, Publisher = {JSTOR}, Title = {Zero-inflated {P}oisson regression, with an application to d