[R] zero inflated poisson and censored-continuous models

[James McBroom]

Georgina,

There are a few packages that estimate parameters of a ZIP model. Try 
Emma Podlich's site at

                         http://www.maths.uq.edu.au/~hmp

(and see the Snews archive:  http://lib.stat.cmu.edu/s-news/Burst/13939)

James.


Georgina.Bermann at astrazeneca.com wrote:

> I wonder if there is a package that will estimate a Zero Inflated Poisson
> Model (ZIP), and also if there is a package that will estimate what is
> called the Tobit model: that is a combination of censored and observed
> values in the same sample.
> 
> Georgina Bermann
> Biostatistics
> AstraZeneca R&D Mölndal
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-- 
James McBroom :-)
Department of Statistics,     web: http://www.stats.ox.ac.uk/~mcbroom 
University of Oxford,         
1 South Parks Road,            ph: +44 (0)1865 272879
Oxford UK OX1 3TG.            fax: +44 (0)1865 272595


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