Displaying 20 results from an estimated 1000 matches similar to: "K-means result - variance between cluster"
2010 Jun 23
1
Clustering
Hi,
I use the following clustering methods and get the
corresponding dendrograms for single, complete, average, ward and
kmeans clustering.
This gives the dendrograms, but doesn't show the calculation-way.
My question: is there a possibility to show this calculation steps
(cluster steps) in matrix or graphical form?
Mit freundlichen Gr??en
Ralph Modjesch
2003 Oct 19
5
SysLinux GPL license violation
Hi there,
As I could not find a direct maintainer email address, I'm sending this
to the mailing list.
SysLinux, being a GPL product, is being sold under a very restrictive
license without even offering the sources to the public.
I've written up my findings here: http://www.palli.nl/~ivo/rdp/
Please have a look for yourself.
Regards,
Ivo Palli
2003 Jul 29
4
pxelinux 2.04+ hangs after loading kernel
Hi,
I just tried to boot my token ring devices with 2.05 - to no avail,
it hangs after loading the kernel. I then tried older versions, and found
2.03 booting like a charm, and every 2.04-pre including 2.04 hanging.
Here's the config of the devices:
- Networkstation 2800 with IBM PCI Token Ring card 2
- IBM Thinkpad T21 with IBM PCI Token Ring card 2
Maybe this has to do with the changes
2006 Dec 08
1
Multiple Imputation / Non Parametric Models / Combining Results
Dear R-Users,
The following question is more of general nature than a merely technical
one. Nevertheless I hope someone get me some answers.
I have been using the mice package to perform the multiple imputations. So
far, everything works fine with the standard regressions analysis.
However, I am wondering, if it is theoretically correct to perform
nonparametric models (GAM, spline
2006 Jun 05
2
DTMF and DISA
Hi Folks,
I'm trying to test out Asterisk overall.
I'm having some problems with DTMF. Currently I'm playing with DISA,
but I'm worried this will happen when I get to implementing AAs etc.
I have a free SIP trunk from IPKall that I'm trying to make work.
I'm able to receive calls, and I've now setup and extension with DISA
and a password.
I connect ok from the
2009 Sep 14
3
oggcat or other ways to combine theora videos (with or without re-encoding)?
hi guys,
first of all, i'd like to ask if there any crossplatform software/service ( gui is also better, an online application like firefogg is great, or at least a command line tools for any platform) to combine theora videos, other than oggcat...
i am doing some art projects that people should be able to remix featured theora videos and i find oggcat very usefull in theory but not in
2010 Mar 07
1
category k-means package?
What happened to the category k-means package for performing k-means
clustering on categorical variables? I expected it to become more
prominent after the Netflix Challenge recommendation engine contest
concluded, but instead it seems to have dropped from view. Where was
it and where is it now, and why did it become less visible?
2014 Jul 02
0
How do I call a C++ function (for k-means) within R?
I am trying to call a C++ k-means function within R and I am struggling. I
know that the below code is used to call a C++ function for gbm but how do I
do it for k-means?
gbm.obj <- .Call("gbm",
Y=as.double(y),
Offset=as.double(offset),
X=as.double(x),
X.order=as.integer(x.order),
2009 Aug 06
0
K-means clustering with NA
I am running a k-means clustering code in R : mydata_kmeans5 <-
kmeans(mydata, centers=5).. But the problem is that the data is having some
"NA" in it. So R is showing me a message :Error in switch(nmeth, { :
NA/NaN/Inf in foreign function call (arg 1)
In addition: Warning messages:
1: In switch(nmeth, { : NAs introduced by coercion
2: In switch(nmeth, { : NAs introduced by
2014 May 16
2
Using centers of hierarchical clustering for k-means
Hi,
i have the following problem: I am using k-means algorithm for clustering.
But instead of using randomized centers, I would like to use centers created
by hierarchical clustering. So I want to apply "hclust" on my data set (in
this case the iris data), getting a solution by "cutree", calculating the
means/centers of the resulting clusters and use these centers as starting
2008 Apr 23
1
k-means: should columns in dataset be in same scale?
Hi all,
Simple question re k-means. If I have a data set with columns that are on
different scales (say col 1 has var=100 and col2 var=2), will this make a
difference to the k-means algorithm? It seems as though it does. If so,
should we first standardize the columns of the dataset so that each column
is given equal weight?
JJ
[[alternative HTML version deleted]]
2013 Oct 27
2
About K-means Clustering
Hi,
I need some answers regarding to R. In K-means clustering ,for K=2, How can I find the members of each cluster and What are the coordinates for the cluster centers?
Please send me a reply soon.
Thank You
Sent from Windows Mail
[[alternative HTML version deleted]]
2005 Dec 02
1
k-means / role of 'nstart'
Hello,
the k-means {stats} help and the Hartigan&Won paper say nothing about
the way random sets works (parameter nstart). I would expect to get
the different results for each random initial set but I always obtain
only one result: how is it selected?
Charles Raux
2003 Feb 13
1
k- means cluster analysis
Hi all,
I am trying to run the k-means cluster analysis using the function kmeans
in the package cluster.
The data are:
x = c(-0.26, -0.23, -0.05, -0.20, 0.30, -0.84, -0.10, -0.12, 0.10, -0.31,
-0.19, 0.18, -0.26,
-0.23, -0.37, -0.23)
I've got two different solutions when I ran this function over a few times:
kmeans(x, centers=2)
The first solution gives the following:
$cluster
[1]
2004 Apr 27
1
beginners k means clustering question
Hi all,
I am wandering.. is it possible to cluster data which is in a single
column ?
for example.. I have some data as follows:
4013
7362
7585
9304
11879
14785
21795
30500
30669
30924
33988
36975
40422
42911
50501
51593
53729
54338
55497
57337
61993
62601
66229
69815
69933
70760
71340
75921
83972
90134
91061
.
.
.
is it possible to cluster this data since it is in a single column ?
I have
2007 Mar 19
1
k-means clustering
? stato filtrato un testo allegato il cui set di caratteri non era
indicato...
Nome: non disponibile
Url: https://stat.ethz.ch/pipermail/r-help/attachments/20070319/0bf66722/attachment.pl
2007 Nov 14
1
Help with K-means Clustering
Hello, I'm new using R.
I'm trying to develop a K-means Clustering with R for some data I have,
however each time I use that instruction with the same data my cluster
means, clustering vector and within cluster sum of square change and I don't
understand why because I use the same parameters and the same data.
Can anybody explain me why does it happen?
Thank you
Act. Calef
2007 Dec 10
1
Rerolling k-means
Hi all
I am working on k-means algorithm (in R: kmeans( ) ). The R-help advice
us to try several random start in order to avoid local minimum. Does one
know if there is a procedure that automaticly run this rerolling and
select the best partition ? Or any studies that gives clues on the
number of rerolling ?
Thanks for helping.
Christophe
2009 Jul 23
0
using k-means clustering in conjunction with heatmap.2 function
Hello,
I am trying to create a heatmap that clusters based on a k-means scheme
rather than a hierarchical clustering scheme.
Suppose I have the following input data, located in sample.table:
x1 x2 x3 x4
x1 17.198 16.306 16.806 16.374
x2 14.554 10.866 15.780 14.596
x3 14.374 14.118 14.569 17.352
x4 17.505 14.596 15.738 14.070
By using the heatmap.2 function as follows, I can create a heatmap
2011 Apr 07
1
K means algorithm C code
Dear R user,
How can I get the C or C++ source code of the "R_kmeans_MacQueen" or
"R_kmeans_Lloyd" subroutines implemented in the R "kmeans" function of the R
stats-package {stats}? Would these be available as a C header file (*.h)
somewhere from the R installation???
Any help to get a C or C++ implementation of these clustering algorithms
would be very