Displaying 20 results from an estimated 3000 matches similar to: "Bug in SOM package (PR#7038)"
2009 Nov 18
3
SOM library - where do I find it
R version 2.9.2 (2009-08-24) - for windows
> library(SOM)
Error in library(SOM) : there is no package called 'SOM'
Where can I get the SOM library from?
Thanks in advance
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2010 Mar 30
1
predict.kohonen for SOM returns NA?
All,
The kohonen predict function is returning NA for SOM predictions
regardless of data used... even the package example for a SOM using
wine data is returning NA's
Does anyone have a working example SOM. Also, what is the purpose of
trainY, what would be the dependent data for an unsupervised SOM?
As may be apparent to you by my questions, I am very new to kohonen
maps and am very grateful
2005 Jun 09
1
Help with SOM membership
Hi all,
I originally posted this to the bioconductor group, but maybe it's better
suited to the r-help...
I'm using som() to partition samples of gene expression data into clusters.
The point is to classify control vs. experimental cases (sample clustering).
The original matrix was 22283 x 8. The 8 samples have 4 controls and 4
experimentals.
I transposed the matrix so that its dim
2005 Feb 04
1
Rare Cases and SOM
I am trying to understand how the SOM algorithm works
using library(class) SOM function.
I have a 1000*10 matrix and I want to be able to
summarize the different types of 10-element vectors.
In my real world case it is likely that most of the
1000 values are of one kind the rest of other (this is
an oversimplification).
Say for example:
InputA<-matrix(cos(1:10),nrow=900,ncol=10,byrow=TRUE)
2013 Apr 15
1
Imputation with SOM using kohonen package
I have a data set with 10 variables, and about 8000 instances (or
objects/rows/samples). In addition I have one more ('class') variable that
I have about 10 instances for, but for which I wish to impute values for.
I am a little confused how to go about doing this, mostly as I'm not
well-versed in it. Do I train the SOM with a data object that contains just
the first 10 variables
2001 Mar 01
1
Kohonen's SOM in R?
Is there an implementation of the SOM ('Self Organizing Map') procedure in
R ?
I am aware of the implementations of Sammon mapping, multidimensional
scaling and, somewhat peripherally, principal curves and projection
pursuit .. but not SOM per se as far as I can see. Am I missing
something?
---------------------
for anyone interesed in SOM
I found Samuel Kaski's thesis
2003 Apr 16
1
Question on SOM and clustering
Hello everyone,
I'm new to this list, so let me introduce myself: my name is Jonck van
der Kogel and I am a graduate student at the Erasmus University of
Rotterdam. I am currently working on my thesis which is on the use of
artificial intelligence for large data-sets.
To do an analysis of a certain data-set I want to use Kohonen's SOM
algorithm. However, as I understand it, the SOM
2003 Jun 10
1
SOM random seed
Hi all,
I have a question about the SOM routine. You can either supply the
initial representatives for the lattice yourself or else they are
chosen randomly from the dataset. Is it possible to pass the
random-seed as an argument somehow, when choosing the random
initialisation of the lattice?
As it is now, each time I run a SOM on a dataset with the same settings
the resulting SOM will still
2003 Oct 15
2
SOM library for R
Hi.
Three years ago, I've read the question of availability of SOM library for
R using Kohonen's SOM_PAK in this mailing-list. This answer was no
availability. And no package dealing with SOM in CRAN.
Is this situation same?
Could you tell me availability this library?
Best Regards.
2006 Apr 01
1
reference paper about SOM
Hi All,
I'm looking for some reference paper about SOM (self organizing map)
algorithm. I tried the paper which is mentioned in
the help page of function "som (package:som)":
http://www.cis.hut.fi/research/papers/som_tr96.ps.Z
But I can't open it for some reason. Could you please help me with it ?
Thanks a lot!
[[alternative HTML version deleted]]
2001 Mar 01
1
SOM code
The (slow) SOM code can be found on my web page (towards the bottom)
http://peabody.vanderbilt.edu/depts/psych_and_hd/faculty/wallern/
On Thu, 1 Mar 2001, John Aitchison wrote:
>
> Is there an implementation of the SOM ('Self Organizing Map') procedure in
> R ?
>
> I am aware of the implementations of Sammon mapping, multidimensional
> scaling and, somewhat
2010 Jun 02
1
how to label the som notes by the majority vote
HI, Dear R community,
I am using the following codes to do the som. I tried to label the notes by
the majority vote. either through mapping or prediction.
I attached my output, the left one dont have any labels in the note, the
right one has more than one label in each note. I need to have only one
label for each note either by majority vote or prediction.
Can anyone give some suggestions or
2000 Oct 30
2
SOM (Self-organizing map)
Does anyone know of any SOM library for R? or any stand alone freeware?
A search from google returns SOM_PAK 3.1 developed at Helsinki University
of Technology. Is there newer version?
Jun
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Send "info", "help", or
2010 Nov 18
3
usage of account code in CDR
Hi everyone
Anyone please explain me How Account code is use for billing.,
Thanks
Nikhil
2005 Oct 24
0
SOM object manupulation
I am trying to use SOM package to cluster some gene expression data. I got
stuck with 2 questions and can't not find any documents to resolve these
matters. I would really appreciate if anybody can shed some sort of light. Q1.
I clustered the data using SOM function and plotted it using plot function.
But I can't figure out how I can list the data elements belongs to different
clusters. I
2009 Jun 01
0
kohonen SOM
Hi All,
I am experimenting with using binary data (1, 0) in the kohonen package. I would like either 1 or 0 to be mapped in SOM, but the package gives me 1 or 0 (as expected), but something in between.
I am not scaling the binary data, but still there are in-between values.
Can anybody suggest a way to keep the data binary, even in the SOM plot?
Thanks a lot.
George
2004 Jul 16
3
Email eller vedhæftet fil blokeret
Email eller vedhæftet fil afsendt fra din adresse (eller med din adresse som afsender) er blevet afvist fra Allerød Kommune.
Spam og virus bliver typisk sendt under dække af andre afsendere og den blokerede email behøver derfor ikke oprinde direkte fra dig. (Husk dog altid at have et opdateret antivirusprogram på din computer.)
Du kan evt. scanne din computer med det gratis' værktøj
2010 Apr 06
2
help output figures in R
somfunc<- function (file) {
aa_som<-scale(file)
final.som<-som(data=aa_som, rlen=10000, grid=somgrid(5,4, "hexagonal"))
pdf(file="/home/cdu/changbin/file.pdf") #output graphic file.
plot(final.som, main="Unsupervised SOM")
dev.off()
}
I have many different files, if I want output pdf file with the same name
as for each dataset I feed to the function
2009 Nov 28
1
Kohonen Package
Hi All,
I am still learning R, but making, IMO, great strides. I learned about Kohonen/Self-Organizing Maps in class and I would like to try to replicate some of the things we have seen in class.
Below is my code. I am trying to create a u-matrix. In the documentation on page 9 it appears the type of plot, dist.neighbours should do the trick, however, I am getting an error:
(Error in
2006 Oct 24
1
samba pdc with ldap backend setup problems
Greetings...
I'm struggling trying to set up a samba 3.0.23c PDC with ldap
backend. The server is Fedora 5, OpenLdap version 2.3.19-4.
I've got it so smbd and nmbd start properly and I can use a windows
box and see the domain using srvmgr.exe and usrmgr.exe. I'm then
able to signon from a windows XP computer with the command
net use \\pdcserver\ipc$ /user:root rootpassword
Some