Displaying 20 results from an estimated 100 matches similar to: "MDS with ranking data (and transformation)"
2007 Mar 09
1
dendrogram / clusteranalysis plotting
Dear all,
i performed a clusteranalysis - which worked so far...
i plotted the dendrogram and sooo many branches, a rough sketch would
be enough ;)
i tried max.levels therefore which worked, but not for the plot...
i used the following
plot(hcd,nodePar =nP, str(hcd,max.level=1))
the output on the terminal was:
--[dendrogram w/ 2 branches and 196 members at h = 2.70]
|--[dendrogram w/ 2
2001 Sep 25
0
Clusteranalysis
Hello,
in marketing-science field i do some
clusteranalysis and get the experience that
the scale cause the results dramatic!
What recommendation can somebody give me, when i use
nominal-variables(recode to 0/1 variables) with
6 point ordinal-variables.
Is it better toDo a z-transformation with the ordinal variables
, or should i recode this values in 0/1 binaries, too!
P.S.
Which is a good
2011 Jan 02
1
Clusteranalysis Chi-square test and SingleLinkage
Hi
The short version of my questions is this:
How can I run a chi-square test over a matrix (table) to get the distanaces
between rows and then run a SingleLinkage (or other fusion algorithm over
the resulting table?
------------
The long-version of my question:
My data consists of different data of different countries so I have stuff
like how many people can read, write in X,Y,Z countries
2008 Jan 15
0
clusteranalysis dendrogram
Dear all,
i have a little trouble with cutting an understanding the handling of
dendrogram and hclust.
plotting clusters does work and it delivers a dendrogram. the problem
is that the dendrogram shows lots of pretty small clusters and only
some larger ones.
i know that this has to do with my data. But is there possibility to
tell the plot function just to plot the clusters with more than
2002 Jul 16
2
selectively aggregate data
I'm shure that this kind of question is asked not for the fist time, but
i would be glad if someone of you could help me out
I have a data.frame like this :
subjnr group block data
1 33 1 1 564.476
2 33 1 1 289.185
3 33 1 1 483.372
4 33 1 1 1461.260
5 33 1 1 315.353
6 33 1 1 351.870
7 33
2009 Jan 28
2
Logical subset of the columns in a dataframe
Hi R-helpers,
I've been struggling with a problem for most of the day (!) so am finally
resorting to R-help.
I would like to subset the columns of my dataframe based on the frequency
with which the columns contain non-zero values. For example, let's say that
I want to retain only those columns which contain non-zero values in at
least 1% of their rows.
In Excel I would calculate a row
2001 Oct 06
1
tcltk
HI,
(1) ...thanks for the last comments to tcltk & Win2000.
(2) - i'm newbie in tcl/tk but would like learn fast and develop
(learning by doing) a tcl/tk clusterAnalysis application which combine
some clusterMethods from different Rpackages.
i use the tkttest.R example as "reference" and become not finished for
my "first" step????
(3) how is it possible that the code
2008 Feb 12
1
LDISKFS-fs warnings on MDS lustre 1.6.4.2
Hi Folks,
We can see these massages on our MDS
Feb 12 12:46:08 mds01 kernel: LDISKFS-fs warning (device dm-0):
empty_dir: bad directory (dir #31452569) - no `.'' or `..''
Feb 12 12:46:08 mds01 kernel: LDISKFS-fs warning (device dm-0):
ldiskfs_rmdir: empty directory has too many links (3)
It seem to indicate that we have bad(corrupted) directory. Do you have
any idea how to
2007 Jan 18
1
weighted MDS, alscal
Hello!
I need to perform weighted multidimensional scaling analysis(WMDS). I did rsitesearch, googled, but I could find no info on how to perform WMDS using R. In several places they say it is possible with the ALSCAL algorithm, but I could not find the relevant function to carry it out.
-----------------------------------------------------------------
???????? ?? ??????? ?? ??? ???????????!
2010 Sep 04
0
Set quota on Lustre system file client, reboots MDS/MGS node
Hi
I used lustre-1.8.3 for Centos5.4. I patched the kernel according to Lustre
1.8 operations manual.pdf.
I have a problem when I want to implement quota.
My cluster configuration is:
1. one MGS/MDS host (with two devices: sda and sdb,respectively)
with the following commands:
1) mkfs.lustre --mgs /dev/sda
2) mount -t lustre /dev/sda /mnt/mgt
3) mkfs.lustre --fsname=lustre
2010 Jan 06
1
math function - MDS method
Hi,
I need math function which is used in: isoMDS, Sammon and metaMDS method.
Anybody know where I may find it? Any manual or webside?
I would be very happy
Thanks a lot !
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2003 Nov 13
0
Help: Strange MDS behavior
Hi!
I have a dissimilarity matrix X and try to compare it with X' =
dist(cmdscsale(X,k)).
If I increase k, I should expect that the error (or fit) should
monotonically decrease, right.
Here is a sample code;
library(mva)
set.seed(12345)
x <- as.matrix(dist(matrix(rnorm(100),ncol=10,byrow=T)))
# x[1,2]<-x[2,1]<-1000 ## <<--** 1
# x[5,6]<-x[6,5]<-1000 ##
2005 Mar 21
1
How to do such MDS in R
i know cmdscale and isoMDS inR can do classical and non-metric MDS.but i want to konw if there is packages can carry on "individual differences scaling" and "multidimensional analysis og preference"?both method are important one,but i can not find any clue on how to do it using R.
anyone can help?
thank you!
2010 Sep 18
0
no failover with failover MDS
Hi all,
we have two servers A, B as a failover MGS/MDT pair, with IPs
A=10.12.112.28 and B=10.12.115.120 over tcp.
When server B crashes, MGS and MDT are mounted on A. Recovery times out
with only one out of 445 clients recovered.
Afterwards, the MDT lists all its OSTs as UP and in the logs of the OSTs
I see:
Lustre: MGC10.12.112.28 at tcp: Connection restored to service MGS using
nid
2013 Mar 08
0
analytical strategy for MDS/ smacof /dissimilarity matrix
Dear all,
My data includes almost three thousand people who rank ten categories into
three variables. The simple example below is almost same except I have many
missing values.
x <-
cbind(
sample( LETTERS[1:10] , 3000 , replace = TRUE ) ,
sample( LETTERS[1:10] , 3000 , replace = TRUE ) ,
sample( LETTERS[1:10] , 3000 , replace = TRUE )
)
I try to figure
2009 Oct 28
0
Cisco MDS 9124 with Centos 5.4
The Release notes indicate that fencing support for the Cisco MDS 9124
and 9134 Fabric Switches have been added as a Technology Preview. I'd
love to use this but it doesn't seem to be visible as a choice when
using the web interface for configuring the cluster. I'm not averse to
doing it by hand but I'm not sure of the XML syntax for that device in
the cluster file.
Anyone
2020 Feb 23
0
Mac OS and interpretation of @ in a username. Ex user@mds.xyz doesn't work on Mac OS but does on Win 10
On 2/23/2020 11:44 AM, Rowland penny via samba wrote:
> On 23/02/2020 16:05, TomK wrote:
>> On 2/21/2020 9:18 PM, Andrew Bartlett via samba wrote:
>>> On Fri, 2020-02-21 at 20:48 -0500, TomK wrote:
>>>>
>>>>
>>>>>
>>>>> "Sadly this really appears to be is a client issue.? You see there the
>>>>> string
2005 Jun 22
2
PCA and MDS
Dear All,
I am not familar with R. I want to use PCA (principal components
analysis) and MDS (multidimensional scaling). Can someone tell me
which R package I should use for PCA and MDS? I appreciate your help
in advance.
Ray
2007 Jun 21
1
MDS size limitations
What are the limitations on size of matrix for MDS functions?
steve
--
Steve Antos
Priva-Technologies
847-640-9020 x3114
cell (540)409-1231
[[alternative HTML version deleted]]
2010 Feb 18
1
R-commands for MDS
Hello
I am using the following command but not able to text the values on the graph can
someone please make suggestions for improvement
#here is the command
loc_mds <- cmdscale(dist.r, k = 7, eig = TRUE)
loc_mds$eig
sum(abs(loc_mds$eig[1:2]))/sum(abs(loc_mds$eig))
sum((loc_mds$eig[1:2])^2)/sum((loc_mds$eig)^2)
x <-loc_mds$points[,1]
y <-loc_mds$points[,2]
plot(x, y,