Displaying 10 results from an estimated 10 matches similar to: "GLMM in lme4 and Tweedie dist."
2008 Sep 10
1
jquery slider
a have a jquery slider a save the final values of the selection in
javascript variables rank_1, rank_2, rank_3
I need to give this values to a controller how can i do that??
some help please!!
thank you!
--
Felipe Vergara Contesse
IngenierĂa Civil Industrial UC
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2007 Aug 10
0
GLM with tweedie: NA for AIC
Dear R users;
I am modelling densities of some species of birds, so I have a problem with a great ammount of zeros.
I have decided to try GLMs with the tweedie family, but in all the models I have tried I got an NA for the AIC value.
Just to check the problem I've compared the a glm using the Gaussian family with the identity link and a glm using the tweedie family with var.power=0 and
2013 Jan 03
0
Post-hoc test for a zero inflated continuous data set with a tweedie distribution
Post-hoc test for a zero inflated continuous data set with a tweedie
distribution?
I have a zero inflated continuous data set of aphid feeding duration on 10+
species of plant. I have fitted a glm model with a tweedie distribution and
used anova() function to show that there is significance between the plant
species. However, I would now like to perform of post-hoc test, ideally a
Tukey-Kramer
2007 Dec 17
1
Identity link in tweedie
Hi there,
I'm using the tweedie distribution package and I cant figure out how to
run a model using an identity link. I know I can use a log link by
having link.power=0 and I think identity would be link.power=1, but I'm
not sure. Furthermore when I try running it with link.power=1 it
requires starting values which I cant manage to give appropriately so
I'm not sure if its
2009 Aug 26
3
tweedie and lmer
Hello all,
I have count data with about 36% of observations being zeros. I found
in some of the examples of the r-help mail archives that a tweedie
family of distributions could be used to fit a model with random
effects. Upon installing the tweedie package and attempting to fit the
following model:
lmer(SUS ~ 1 + (1|
2010 Sep 30
1
AIC for tweedie glm
Dear R-users,
I'm trying to model some data using a tweedie GLM approach. My response
variable is the number of pupae that are the offspring of a subordinate wasp
on a wasp's nest. However, they're not count data- for each nest, I only
know the mean number of pupae per subordinate, which is continous. The data
also contain a high proportion of zeros.
I'm not very experienced at
2007 Aug 13
1
GML with tweedie: AIC=NA
Dear Catarina,
I prefer to leave the AIC value as NA for the tweedie GLM family
because it takes extra time to compute and is only occasionally
wanted. It's easy to compute the AIC yourself using the dtweedie()
function of the tweedie package.
Best wishes
Gordon
At 03:05 AM 14/08/2007, Catarina Miranda wrote:
>Dear Gordon;
>
>I have also sent this email to R help mailing list,
2010 Jan 11
0
tweedie.profile error message
Good afternoon
My name is Joanne Lenehan, I am a post grad at UNE using R version 2.9.0
I came across the Tweedie package in old R help posts and was interested in
giving it a go for some data.
The data is below and also attached as BaregroundLitterLogs
Site
Treatment
Graze
Dam
Plot
Time
Bare
Litter
Logs
1
C
remote
yes
1
A
0
2
0
1
C
remote
yes
2
A
0
15
0
1
HE
2019 Sep 12
0
Fw: Calling a LAPACK subroutine from R
Hi guys,
interestingly, my problem seems to be solved by writing a FORTRAN
wrapper for the Fortran code! (As long as the check doesn't get
smarter...). This is the relevant part of my Fortran code:
-----------------------------------------------------------
subroutine gmlfun(what,
& totevent, totrs, ns,
& antrs, antevents, size,
& totsize,
2019 Sep 11
4
Fw: Calling a LAPACK subroutine from R
Sorry for cross-posting, but I realized my question might be more appropriate for r-devel...
Thank you,
Giovanni
________________________________________
From: R-help <r-help-bounces at r-project.org> on behalf of Giovanni Petris <gpetris at uark.edu>
Sent: Tuesday, September 10, 2019 16:44
To: r-help at r-project.org
Subject: [R] Calling a LAPACK subroutine from R
Hello R-helpers!