Hey everyone, I need to make sure of how 'hurdle' from package 'pscl' estimating the count part. in the Code, we may use the command dist='poisson', does it estimate the count part by normal poisson or specially zero truncated poisson? Any one has idea? Best, Liv
hurdle in package pscl
2 messages · Yingjie Zhang, Gavin Simpson
On Wed, 2010-09-15 at 10:19 +0200, Yingjie Zhang wrote:
Hey everyone, I need to make sure of how 'hurdle' from package 'pscl' estimating the count part. in the Code, we may use the command dist='poisson', does it estimate the count part by normal poisson or specially zero truncated poisson? Any one has idea?
The latter; a left truncated Poisson at Y= 1. Which you could have found yourself if you'd read the Vignette that comes with the pscl package : http://cran.r-project.org/web/packages/pscl/index.html See section 2.2. HTH G
Best, Liv
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