Displaying 4 results from an estimated 4 matches for "brunsgat".
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brunsgate
2006 Jan 26
1
Automatic differentiation (was: Re: D(dnorm...)?)
...ulties to use them with R is the
>need to translate the R code into C of Fortran code, but probably there are
>many other problems that I'm not able to see.
>
>Alberto
>--
_____________________________
Hans Julius Skaug
Department of Mathematics
University of Bergen
Johannes Brunsgate 12
5008 Bergen
Norway
2005 Dec 14
3
glmmADMB: Generalized Linear Mixed Models using AD Model Builder
...re still happy to get feedback for users, and to get suggestions
for improvement.
We have set up a forum at http://www.otter-rsch.ca/phpbb/ for discussions
about the software.
Regards,
Hans
_____________________________
Hans Julius Skaug
Department of Mathematics
University of Bergen
Johannes Brunsgate 12
5008 Bergen
Norway
ph. (+47) 55 58 48 61
2006 Feb 09
1
glmm.admb - bug and possible solution??
Dear Dr Skaug and R users,
just discovered glmm.admb in R, and it seems a very useful tool.
However, I ran into a problem when I compare two models:
m1<-glmm.admb(survival~light*species*damage, random=~1, group="table",
data=bm, family="binomial", link="logit")
m1.1<-glmm.admb(survival~(light+species+damage)^2, random=~1,
group="table", data=bm,
2005 Oct 13
3
Do Users of Nonlinear Mixed Effects Models Know Whether Their Software Really Works?
Do Users of Nonlinear Mixed Effects Models Know
Whether Their Software Really Works?
Lesaffre et. al. (Appl. Statist. (2001) 50, Part3, pp 325-335)
analyzed
some simple clinical trials data using a logistic random effects
model. Several packages and methods MIXOR, SAS NLMIXED were employed.
They reported obtaining very different parameter estimates and
P