Displaying 2 results from an estimated 2 matches for "bermann".
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bergmann
2001 Feb 07
5
zero inflated poisson and censored-continuous models
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 M?lndal
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2001 Apr 02
2
standard errors of fitted values are different S-plus survival pa ckage and R
...S-plus, the
estimated standard errors are different. It may be different estimators of
the variance of the residuals? Which one is the default in R, I don't find
that too easily in the documentation. Does anybody know?
I'll be very grateful if somebody can help in this matter.
Georgina Bermann
Biostatistics, AstraZeneca R&D M?lndal
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