Displaying 20 results from an estimated 1000 matches similar to: "Dissimilarity matrix and number clusters determination"
2016 Apr 04
2
question about probplot in e1071 package
Hello!
I am using probplot in the e1071 package and want to do something like the
following, only with the the 2nd plot overlaying the first. I can't seem to
make it work. Any suggestions?
*library(e1071)
**x <- rnorm(100, mean=5)*
*y <- rnorm(100, mean=3)*
*probplot(x, line=FALSE)
*
*probplot(y, line=FALSE)
*
*Regards,*
*Tom*
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2016 Apr 01
2
Gráficos estilo "hecho a mano"
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2016 Sep 06
2
igraph V a partir de E y subgrafos
Estimado Javier,
Me alegra que hayas avanzado con tu error.
Te respondo a esto último.
La función induced.subgraph() espera como segundo parámetro una lista de
los IDs de los vértices, mientras que tú le estás pasando una lista de
'edges'.
Prueba lo siguiente:
c <- induced.subgraph(datos.network, which(V(datos.network)$name == 'Casa'))
Si entendí bien todo, debería
2016 Apr 07
0
using apply to a data frame
??I would like to apply a function, fract, to the columns of a
dataframe. I tried the following
apply(data5NonEventEpochs,2,fract)
but, no surprise it did not work as apply works on matrices not data
frames. How can I apply a fuction to the columns of a data frame? (I
can't covert data5NonEventsEpochs to a matrix as it contains character
data).
Thank you,
John
John David Sorkin M.D., Ph.D.
2016 Apr 01
2
R igraph
Estimado Luisfo Chiroque
Hay aristas múltiples, eso es por la preparación de los datos, es que separe por componentes, no me refiero al término componente estadístico, sino a descomposición de algo en los componentes que lo construyen, algunos son comunes y otros no, cuándo son comunes hay una relación en la red.
Voy a probar con simplify, cuándo lo leí yo lo descarté, lo releeré, ¿Qué opina de
2008 Mar 08
1
Elbow criterion plots for determining k in hierarchical clustering
Hi There,
I'm working on some cluster analyses on a large data-set using hclust with
Wards method and Manhattan (city block) distance measures. I've created
dendrograms to illustrate the clustering criteria, but would like to create
a plot to examine for the classic elbow criterion to use in determining the
best number of clusters. Ideally I'd like to plot percent variance
explained
2016 Sep 06
2
igraph edges busqueda
Estimados
Tengo una duda
E(datos.network)[[inc('LoQueBusco')]]
+ 20/6795 edges (vertex names):
E(datos.network)[E(datos.network)$Cosa=="'LoQueBusco'"]
+ 78/6795 edges (vertex names):
La primer forma es 20/? la segunda 78/? ¿Los resultados no tendrían que ser idénticos? Estos datos son pocos pero me desarman la cabeza.
Desde ya muchas gracias.
Javier Rubén Marcuzzi
2016 Sep 03
2
igraph V a partir de E y subgrafos
Estimados
Tengo un problema. Con igraph creo una red a partir de un data.frame, las dos primeras columnas son V y las restantes E. Hay un trabajo anterior, yo me pregunté ¿Qué pasaría si las cosas hablaran entre ellas?, entonces hay un cruce de información de todos contra todos y elimino los nulos y duplicados. Al ver los listados E, V tienen la información. Hasta ahí estaría todo bien (me
2016 Sep 14
3
Saltar filas no numericas al importar csv
No me vale, porque no es un problema de columnas, es de filas.
Cuando importo el csv, como tiene cada columna segun la fila o numeros o texto, R convierte la columna automaticametne en factor.
He probado a convertir las columnas a numeric, pero tampoco me vale, ya que transforma el texto a numeros....
¿Alguna alternativa? estoy pensando ne poner skip y ne el skip meter las letras del
2017 Jun 18
2
Stereo dropping to mono with libopus 1.2 RC
OK, so at the link : https://uloz.to/!yyVrCY2Y8sn1/devil-s-elbow-opus-7z
(https://uloz.to/%21yyVrCY2Y8sn1/devil-s-elbow-opus-7z) (change the language
to English by clicking at the flag at the right upper side of the web page
or just simply click at "Stáhnout pomalu" - it may take some time as the
file is 55 MB+ and the download service is free) there is 7zip archive with
5 music
2011 Jun 20
1
Elbow criterion
Hi,
I would like to cluster a dataset with the ward algorithm.
That works fine. But I can't find a method to plot the structure chart
to estimate the "elbow crterion" for the number of clusters.
Can someone tell me how I can do it?
Thanks for your help.
Dominik
2017 Jun 19
1
Stereo dropping to mono with libopus 1.2 RC
Hello Jean-Marc, yes, it works for both 32 and 48 kb/s. Also this option
marginally increases the size of the file which is understandable. I tried a
few other music files and found that this stereo narrowing happens not only
in the case of track I submitted (although in smaller scale) so it would be
great if the final libopus 1.2 had officialy a parameter to force music
"mode" of
2007 Apr 10
1
Several clusters in the same matchine
Hi,
is it possible to have several ocfs2 clusters in the same machine?
We have webserver1 and webserver2 that should belong to cluster1 and
cluster2 "workgroup".
Cluster1 should be made of webserver1, webserver2 and application_server1
Cluster2 should be made of webserver1, webserver2 and application_server2
Is this possible?
Thanks,
Nuno Fernandes
2011 Feb 14
1
Optimal Y>=q cutoff after logistic regression
Hi,
I understand that dichotimization of the predicted probabilities after
logistic regression is philosophically questionable, throwing out
information, etc.
But I want to do it anyway. I'd like to include as a measure of fit %
of observations correctly classified because it's measured in units
that non-statisticians can understand more easily than area under the
ROC curve, Dxy, etc.
2004 Jun 28
3
How to determine the number of dominant eigenvalues in PCA
Dear All,
I want to know if there is some easy and reliable way
to estimate the number of dominant eigenvalues
when applying PCA on sample covariance matrix.
Assume x-axis is the number of eigenvalues (1, 2, ....,n), and y-axis is the
corresponding eigenvalues (a1,a2,..., an) arranged in desceding order.
So this x-y plot will be a decreasing curve. Someone mentioned using the elbow (knee)
2006 Mar 24
2
Return all rows, split then show uniques
I''m returning some rows from a tags database that look like this:
ID WORDS
1. apple banana pear
2. banana melon
3. apple peach lime
What I want to do with that data is use the .split method to divide them
into separate values in an array, then use the .uniq method to return a
unique list of the words like so:
apple, banana, pear, melon, peach, lime
So in my controller I
2012 Sep 04
3
Tendonitis and R users
Hello
This request asks something beyond the technicalities of the R language, I would like to ask you wonderful people if you have ever suffered as programmers ( or de facto programmers like myself though I am a 'research assistant') from tendonitis and how you coped with it, i have golfer's elbow on both sides. Any resources?
Pancho Mulongeni
Namibia
2008 Jul 07
2
Colour clusters in a 2d plot
R experts,
I have three columns. c1 and c2 are numeric variables whereas c3 are the
clusters classes (nominal variable, 10 different: cluster1, cluster2,
cluster3, cluster4, cluster5 ....). I'd like to plot c1 against c2 (easy!)
in a 2D plot and put different color depending to the cluster class
automatically regardless the number of clusters.
Could anyone give a hand?
Josep Maria,
matrix
2012 Sep 29
1
quota severe performace issue help
Dear gluster experts,
We have encountered a severe performance issue related to quota feature of
gluster.
My underlying fs is lvm with xfs format.
The problem is if quota is enabled the io performance is about 26MB/s but
with quota disabled the io performance is 216MB/s.
Any one known what's the problem? BTW I have reproduce it several times and
it is related to quota indeed.
Here's the
2006 May 17
2
Asterisk & Meridian Tie Line
<p>I am new to the group but have searched the doc's FAQ's etc before posting here.</p><p> We are attempting tie our asterisk server/service to the building's PBX, the building is in the UK and the local PBX is a meridian option 11 installed and mainteined by BT.</p><p>BT Have installed a NTBK50AA E1-PRI card in the meridian with daughter cards