Displaying 20 results from an estimated 20000 matches similar to: "Network Drives Dropping Out"
2009 Feb 19
1
Bug in predict function for naiveBayes?
Dear all,
I tried a simple naive Bayes classification on an artificial dataset, but I
have troubles getting the predict function to work with the type="class"
specification. With type= "raw", it works perfectly, but with type="class" I
get following error :
Error in as.vector(x, mode) : invalid 'mode' argument
Data : mixture.train is a training set with 100
2004 Dec 02
1
Home drives not as documented
Hi,
I'm using Samba 3.0.5 on a Fedora Linux box.
I have in my smb.conf
logon home = \\%L\%u\.profile
logon path = \\%L\profiles$\%u
logon drive = H:
[profiles$]
comment = Windows XP profile directory
path = /home/profile
[homes]
comment = home dirs
browseable = no
writeable =yes
I have a mixture of Win95 and WinXP clients
The Win95 clients map the home drive correctly to the users home
2002 Dec 13
2
Stumped at "Network Neighbourhood", Samba server is visible, but it's path can't be found ...
Hi all,
I can see the RH7.3 linux box I've configured with the latest
Redhat RPM samba package in the Windows 2000 network
neighbourhood, but when I double click the W2000 computer
icon I get the message
"\\Linuxbox is not accessible,
The network path was not found."
The network is a small switched lan, sadly with only one unix
box (RH7.3) and a mixture of Windows2000 and 98
2011 Feb 02
2
clustering with finite mixture model
Dear R-help,
I am doing clustering via finite mixture model. Please suggest some packages in
R to find clusters via finite mixture model with continuous variables. And
also I wish to verify the distributional properties of the mixture distributions
by fitting the model with lognormal, gamma, exponentials etc,.
Thanks in advance,
warm regards,Ms.Karunambigai M
PhD Scholar
Dept. of Biostatistics
2007 Dec 05
1
Calculating large determinants
I apologise for not including a reproducible example with this query but I
hope that I can make things clear without one.
I am fitting some finite mixture models to data. Each mixture component
has p parameters (p=29 in my application) and there are q components to
the mixture. The number of data points is n ~ 1500.
I need to select a good q and I have been considering model selection
methods
2008 Dec 19
2
How do I generate one vector for every row of a data frame?
I am trying to generate a set of data points from a Gaussian mixture
model. My mixture model is represented by a data frame that looks
like this:
> gmm
weight mean sd
1 0.3 0 1.0
2 0.2 -2 0.5
3 0.4 4 0.7
4 0.1 5 0.3
I have written the following function that generates the appropriate data:
gmm_data <- function(n, gmm) {
c(rnorm(n*gmm[1,]$weight, gmm[1,]$mean,
2005 Oct 21
1
finite mixture model (2-component gaussian): plotting component gaussian components?
Dear Knowledgeable R Community Members,
Please excuse my ignorance, I apologize in advance if this is an easy question, but I am a bit stumped and could use a little guidance.
I have a finite mixture modeling problem -- for example, a 2-component gaussian mixture -- where the components have a large overlap, and
I am trying to use the "mclust" package to solve this problem.
I need
2009 Apr 30
1
finite mixture model (2-component Weibull): plotting Weibull components?
Dear Knowledgeable R Community Members,
Please excuse my ignorance, I apologize in advance if this is an easy question, but I am a bit stumped and could use a little guidance.
I have a finite mixture modeling problem -- for example, a 2-component Weibull mixture -- where the components have a large overlap, and
I am trying to adapt the "mclust" package which concern to normal
2017 Jun 29
0
package to fit mixtures of student-t distributions
Offlist, because this is (a) an opinion and (b) about statistics and
therefore offtopic.
I don't know whether any such package exists, but I would predict that
this is likely to be overdetermined (too many parameters) and
therefore unlikely to be a successful strategy. Fitting a mixture of
Gaussians is already difficult enough.
Feel free to ignore, of course, and no need to reply.
Cheers,
2002 Oct 22
5
Mixture of Univariate Normals
Dear list,
Can anyone provide a package or code for estimating the parameters of a
mixture of c (c >=2) univariate normal distributions?
I've tried the algorithm provided by Venables & Ripley (1999) p 263, for
the mixture of two normal, but I don't find the "ms" function in R. I've
used nls instead, but I'm not sure if it works the same.
The data I have is very
2017 Jun 29
1
package to fit mixtures of student-t distributions
I don?t see how neither a) or b) applies to this question nor the technical merit of the remark about mixture models.
Do you have a suggestion for a more appropriate forum for this issue/question? (stackoverflow basically sent me here).
Kind regards
> On 29. Jun 2017, at 16:58, Bert Gunter <bgunter.4567 at gmail.com> wrote:
>
> Offlist, because this is (a) an opinion and (b)
2005 May 10
4
density function
Hi,
I wonder if the function "density" outputs the gaussian mixture formula
that is estimated from the input data, assuming a gaussian model is used
at each data point ? I want to take the derivative of the finally
estimated gaussian mixture formula for further analysis.
Thanks in advance for any help that you can offer me!
Hui
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
2017 Jun 29
6
package to fit mixtures of student-t distributions
Hello!
I am new to R (before used python exclusively and would actually call the R solution for this issue inside a python notebook, hope that doesn?t disqualify me right of the batch).
Right now I am looking for a piece of software to fit a 1D data sample to a mixture of t-distributions.
I searched quite a while already and it seems to be that this is a somehwat obscure endeavor as most
2008 Jun 23
3
Simulating Gaussian Mixture Models
Hi,
Is there any package that I can use to simulate the Gaussian
Mixture Model , which is a mixture modeling method that is widely used
in statistical learning theory.
I know there is a mclust, however, I think it is a little bit
different from my problem.
Thanks very much..
regards.
--------------------------
Peng Jiang
??
Ph.D. Candidate
Antai College of Economics &
2017 Jun 29
0
package to fit mixtures of student-t distributions
Would package "teigen" help?
Ranjan
On Thu, 29 Jun 2017 14:41:34 +0200 vare vare via R-help <r-help at r-project.org> wrote:
> Hello!
>
> I am new to R (before used python exclusively and would actually call the R solution for this issue inside a python notebook, hope that doesn?t disqualify me right of the batch).
>
> Right now I am looking for a piece of
2004 Nov 16
2
question about AIC
Hi everybody,
we are a pool of phd students and we have a question about AIC. We are interested
in calculating the AIC for a mixture model on galaxies data. So far we have
found AIC works only for regression models, whereas we need AIC for a mixture
of Normal with mean, sd and weights given by our EM algorithm.
May you help us?
thanks in advance
2001 Sep 26
1
Seeking optimal mixture
This is maybe not directly an R problem but I have used R to try to solve
it so I think somebody may be able to help.
I have a mixture model with three components and a quadratic Scheffe
polynomial p1x1+p2x2+p3x3+p12x1x2+p13x1x3+p23x2x3 fitted to the response.
Now I'd like to compute the mixture corresponding the maximum response.
Model for Y1 has the parameters
p1=124.02
p2=60.973
p3=41.479
2009 Jun 03
2
problem with uniroot
Hi R-users,I'm trying to solve a non linear equation, to find the degrees of
freedom of a mixture of t student. I'm sure i wrote the minimization
equation in the right way, but when i try to run the EM algorithm to
estimate the parameters of the mixture, the following error will appear:
Error in uniroot(function(z) log(z/2) - digamma(z/2) + 1 - log((z + d)/2) +
:
f() values at end
2017 Aug 10
1
"Help On optim"
Hello,
I have some parameters from Mclust function. The parameters are in the form
*parametersDf *
* mu_1 mu_2 var_mc1 var_mc2 c1
c2 *
*2 1.357283 2.962736 0.466154 0.1320129 0.5258975
0.4741025 *
*21 8.357283 9.962736 0.466154 0.1320129 0.5258975
0.4741025 *
Each row in the above data frame