Displaying 20 results from an estimated 10000 matches similar to: "R package to fit mixture or cure survival models"
2009 May 13
1
Mixture of survivals or cure models
Dear All,
I am desperately trying to find any R package that fits a mixture survival models also know as a cure models. This are survival model where the survival function is improper which also means that a fraction of subjects are expected not to expreience the event. A Huge literature has been developed for thes type of models but I couldn't find any R package that fits this type of
2001 Nov 14
0
Fitting Pareto dist in a mixture
Dear all:
First, apologies for cross-posting multiplicities and for a query that is
more
analytically related than S-language related.
The bottom-line wish is:
Could you please provide and advice, references, etc on S software
approaches for
fitting a distribution with density:
p*g(x) + (1-p)*f(x)
where g(x) is the familiar lognormal 2-parameter density
and f(x) is Pareto as defined below?
2009 May 19
2
problem with installing a local zip file : GFCURE
Dear all,
I am trying to install a package called "GFCURE" from a local zip file. This package fits a cure survival model and has been downloaded from:
http://post.queensu.ca/~pengp/software.html
The problem is that when I try to install this package from a local zip file using R, I've got the following error message:
Error in gzfile(file, "r") : cannot
2011 Jul 12
1
Question re complex survey design and cure models
Hello all,
I am using AddHealth data to fit a cure, aka split population model using nltm. I am not sure how to account for the complex survey design - does anyone have any suggestions? Any help would be greatly appreciated!
Sincerely,
Sam
2011 May 20
0
Which package to use when fit Mixture regression model with ......................
I'm pretty new in R... try to learn ASAP for a project, I wonder if anyone
can provide some advice on which package to use when fit Mixture regression
model with both categorical(more than two levels) and continuous variables.
I tried to use Flexmix... and transposed the multi-level variables as
several 0-1 dummy variable and tried to put in the package and find the fit.
But it always tells
2013 Mar 18
2
Fit a mixture of lognormal and normal distributions
Hello
I am trying to find an automated way of fitting a mixture of normal and log-normal distributions to data which is clearly bimodal.
Here's a simulated example:
x.1<-rnorm(6000, 2.4, 0.6)x.2<-rlnorm(10000, 1.3,0.1)X<-c(x.1, x.2)
hist(X,100,freq=FALSE, ylim=c(0,1.5))lines(density(x.1), lty=2, lwd=2)lines(density(x.2), lty=2, lwd=2)lines(density(X), lty=4)
Currently i am using
2007 Feb 12
0
[862] trunk/wxruby2/swig/fixmodule.rb: Fix regression from upgrading to SWIG 1.3.31; cure lots of MSW crashes
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2008 Feb 18
2
Hazard model with long-term survivor (cure model)
Dear All,
Are there R packages that can estimate survival model with long-term
survivors? This is sometimes known as "cure" model or "split-population"
model. Thanks.
Shige
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2010 May 19
2
Cause and cure for "Exceptionally long voice queue length queuing to Local"?
Hello,
We're seeing lots of warnings like the following, running Asterisk
1.6.1.12. Does anyone know the cause or cure?
One explanation I've come across is that the peer is congested and
sending RTCP messages asking us to slow the RTP down. Is there any way
we can verify this?
[May 17 13:42:45] WARNING[27482] channel.c: Exceptionally long voice
queue length queuing to Local/12126412121
2013 Mar 31
0
Skewness of fitted mixture not correct?
I fitted a gaussian mixture to my financial data. The data can be found
here: http://uploadeasy.net/upload/32xzq.rar
I look at the density with
plot(density(dat),col="red",lwd=2)
this has a skew of
library(e1071)
skewness(dat)
-0.1284311
Now, I fit a gaussian mixture according to:
f(l)=πϕ(l;μ1,σ21)+(1−π)ϕ(l;μ2,σ22)
with:
2009 Jun 13
1
Fitting Mixture of Non-Central Student's t Distributions
Dear all,
I am attempting to model some one-dimensional data using a mixture model
of non-central Student's t distributions. However, I haven't been able
to find any R package that provides this functionality.
Could there be a way to "manipulate" the EM algorithms from the mixdist
or mixtools package to fit the model, or do you have any other
suggestions?
If anyone could help
2005 Jul 08
1
Finite Mixture Models with logistic regression
Do we have any R package that can do analysis on finite mixture model with
logistic regression? Thanks
Faith
Feng Gao
Dept. of Statistics
Virginia Tech.
Email: fgao at vt.edu
2009 Aug 06
0
Fitting Mixture of Non-Central Student's t Distributions
Dear Ingmar & Dave,
Thanks a lot for your help and sorry for the late reply.
Finally, I've found a way to separate the mixture of distributions
(empirically). But the gamlss package looks great, I'm sure it will help
me during my further studies.
Kind regards,
Susanne
On 15 Jun 2009, at 20:09, Ingmar Visser wrote:
> Dear Susanne & Dave,
>
> The gamlss package family
2008 Feb 01
1
dueling (s)printf()'s - what's the cure?
Hello All,
I mentioned a problem with this once before, and was referred to
other threads that also talked about this. But I believe a recent
problem I was experiencing, may have been related to this:
[: -le: argument expected. So I'd like to bring it up again, in
hopes that someone might have a cure. Specifically, two printf()'s
are sent to the same line, which results in a /very/ hard
2013 Feb 18
0
FW: Best R package for Finite Mixture Models or Latent Class Models
Can anyone point me to a comparision of the various packages avaliable to do Finite Mixture Models or Latent Class Models in R. As ever my googling only produce papers on specific packages or implementations. I am looking of a considered comparision that criticlaly compares them. Failing that just your own opinion or experience would be nice to hear.
Best
R
2012 Mar 05
1
Fitting & evaluating mixture of two Weibull distributions
Hello,
I would like to fit a mixture of two Weibull distributions to my data, estimate the model parameters, and compare the fit of the model to that of a single Weibull distribution.
I have used the mix() function in the 'mixdist' package to fit the mixed distribution, and have got the parameter estimates, however, I have not been able to get the log-likelihood for the fit of this model
2005 Aug 17
1
Fitting mixture model
I would like to fit a gaussian mixture model to a vector with about 50,000
points. I have tried using Mclust to do so, but 50,000 points requires more
memory than I have (and I am running with 4Gb). Any other suggestions for
how to do so? Oh, I don't know the number of components, but the number
will likely be less than 5 or 6.
Thanks,
Sean
2009 Nov 25
1
fitting mixture of normals distribution to asset return data
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2011 Feb 28
0
Gamma mixture models with flexmix
I've been trying with no success to model mixtures of Gamma distributions using
the package flexmix (see examples below). Can anyone help me get it to model
better? Thanks very much.
-Ben
##
## Please help me get flexmix to correctly model mixtures of
## Gamma distributions. See examples below.
##
library('flexmix')
##
## Plot a histogram of dat and the Gamma mixture model given
2009 Nov 03
1
fitting a confined mixture model
Hello all,
I would like to fit a mixture model whose components are normal
distributions confined in a closed interval. Since there are already
several packages for EM, I would like to extend one of these instead of
writing a new script from scratch. What would be the best way to
customize such an existing package for doing that? Which one is the best
in terms of extensibility? (e.g mixtools,