Displaying 1 result from an estimated 1 matches for "valdaekar".
2009 Oct 23
3
opposite estimates from zeroinfl() and hurdle()
...parameter associated with a
covariate (diam) using zeroinfl(). It led me to compare the estimates
given by zeroinfl() and hurdle():
The (significant) negative estimate here is surprising, given the
biology of the species:
> summary(zeroinfl(bnl ~ 1| diam, dist = "poisson", data = valdaekar,
EM = TRUE))
Count model coefficients (poisson with log link):
Estimate Std. Error z value Pr(>|z|) (Intercept)
3.74604 0.02635 142.2 <2e-16 ***
Zero-inflation model coefficients (binomial with logit link):
Estimate Std. Error z value Pr(>|z|) (Intercept...