Displaying 20 results from an estimated 3000 matches similar to: "Regarding Performance and Prediction routines of rattle library and XML package"
2012 Dec 19
2
pROC and ROCR give different values for AUC
Packages pROC and ROCR both calculate/approximate the Area Under (Receiver Operator) Curve. However the results are different.
I am computing a new variable as a predictor for a label. The new variable is a (non-linear) function of a set of input values, and I'm checking how different parameter settings contribute to prediction. All my settings are predictive, but some are better.
The AUC i
2008 Apr 05
2
Odd tcltk and Rattle interference on MS/Windows
Hi Graham,
Your guess is right. The event loop stuff is handled differently on Windows
than on Unix-like OSes. There is a hook, called tcl_do that is hard-coded
into the R Windows GUI. It is called whenever the console is idle. RGtk2 is
able to hook into that to process GTK+ events. The problem is that the two
packages replace each other's handler. So in this case tcltk is blocking
GTK+ from
2007 Feb 28
3
Datamining-package rattle() Errors
Dear Group
I have few errors while installing package rattle from CRAN
i do the installing from the local zip files...
I am using R 2.4.0 do i have to upgrade to R2.4.1 ?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
utils:::menuInstallLocal()
package 'rattle' successfully unpacked and MD5 sums checked
updating HTML package descriptions
> help(rattle)
No
2011 Apr 15
1
Launcher for Rattle?
How to make a launcher for Rattle?
Regards,
Iurie Malai
Moldova Pedagogical State University
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2007 Jan 08
1
How to use Rattle for Data mining through R?
Dear Mr. Bengtsson,
Now i am able to work with R-Matlab interface comfortably. Thanks to you. Recently, I came to know that R can be used for data mining as well. I went through the following site for this :
http://rattle.togaware.com/
As they have suggested, I have also installed the two packages:
> install.packages("RGtk2")
> install.packages("rattle")
2010 Nov 15
6
Problem in installing and starting Rattle
Hello,
I am trying to install and run Rattle on my Dell Laptop and I have Windows 7
OS.
The following three commands executed successfully :
install.packages("RGtk2")
install.packages("rattle")
library(rattle)
Rattle: Graphical interface for data mining using R.
Version 2.5.47 Copyright (c) 2006-2010 Togaware Pty Ltd.
Type 'rattle()' to shake, rattle, and roll
2006 Nov 24
1
How to find AUC in SVM (kernlab package)
Dear all,
I was wondering if someone can help me. I am learning SVM for
classification in my research with kernlab package. I want to know about
classification performance using Area Under Curve (AUC). I know ROCR
package can do this job but I found all example in ROCR package have
include prediction, for example, ROCR.hiv {ROCR}. My problem is how to
produce prediction in SVM and to find
2010 Feb 25
2
how to install rattle for data mining
library(rattle)
Loading required package: pmml
Loading required package: XML
Error: package 'XML' could not be loaded
In addition: Warning message:
In library(pkg, character.only = TRUE, logical.return = TRUE, lib.loc =
lib.loc) :
there is no package called 'XML'
i have installed glade package
>install.packages("RGtk2")
> install.packages("rattle")
2009 Jul 25
4
ROCR package question
I use ROCR to plot multiple runs' performance. Using the sample code
as example:
# plot ROC curves for several cross-validation runs (dotted
# in grey), overlaid by the vertical average curve and boxplots
# showing the vertical spread around the average.
data(ROCR.xval)
pred <- prediction(ROCR.xval$predictions, ROCR.xval$labels)
perf <- performance(pred,"tpr","fpr")
2011 Jan 20
2
auc function
Hi, there.
Suppose I already have sensitivities and specificities. What is the quick R-function to calculate AUC for the ROC plot? There seem to be many R functions to calculate AUC.
Thanks.
Yulei
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2007 Feb 28
3
Package RGtk2, rattle, libatk-1.0.0.dll Errors
Dear Group,
I have followed the instructions from the link
http://datamining.togaware.com/survivor/Installing_GTK.html
However i couldn't fix the libatk01.0.0.dll application error
Here, i did uninstall R-Gui-2.4.0 then did the fresh installation and still
facing the same problem
I am using Windows- XP
*Please find the following*
R version 2.4.0 (2006-10-03)
Copyright (C) 2006 The R
2007 Dec 13
2
Function for AUC?
Hello
Is there an easy way, i.e. a function in a package, to calculate the
area under the curve (AUC) for drug serum levels?
Thanks for any advice
--
Armin Goralczyk, M.D.
--
Universit?tsmedizin G?ttingen
Abteilung Allgemein- und Viszeralchirurgie
Rudolf-Koch-Str. 40
39099 G?ttingen
--
Dept. of General Surgery
University of G?ttingen
G?ttingen, Germany
--
http://www.chirurgie-goettingen.de
2011 Feb 21
3
ROC from R-SVM?
*Hi,
*Does anyone know how can I show an *ROC curve for R-SVM*? I understand in
R-SVM we are not optimizing over SVM cost parameter. Any example ROC for
R-SVM code or guidance can be really useful.
Thanks, Angel.
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2009 Oct 30
2
Rattle - libglade not found
I have just installed rattle on Ubntu 9.04, and R 2.8.1 and get an
error message when I try to run it.
> library(rattle)
> rattle()
Error in rattle() :
The RGtk2 package did not find libglade installed. Please install it.
I have installed libglade2-dev through synaptic, and following
suggestion from an earlier thread re-installed RGtk2 using
install.packages, and through synaptic.
Can
2009 Jul 30
2
Problem with RGtk2 & Rattle
HI
Apologies for previously trying to post this question onto the Dev forum.
I have recently update my versions of R and related packages. When I try to
use rattle the following message appears
"Error in .RGtkCall("R_setGObjectProps", obj, value, PACKAGE = "RGtk2") :
Invalid property tooltip-text!"
I have downloaded and installed the latest available version of
2010 Jan 22
2
Computing Confidence Intervals for AUC in ROCR Package
Dear R-philes,
I am plotting ROC curves for several cross-validation runs of a
classifier (using the function below). In addition to the average
AUC, I am interested in obtaining a confidence interval for the
average AUC. Is there a straightforward way to do this via the ROCR
package?
plot_roc_curve <- function(roc.dat, plt.title) {
#print(str(vowel.ROC))
pred <-
2008 Sep 03
2
Does rattle depend on testing's ggobi?
Hello All,
I'm trying to install rattle from source on a AMD64 machine running etch. I
have two packages installed from the etch backport
(r-cran-rodbc and r-cran-rsprng) but all the rest installed from source. I'm
trying to install rattle, but
install.packages("rattle", dependencies=TRUE)
Tries to install rggobi, which complains about the version of libggobi. Does
2006 Mar 20
1
How to compare areas under ROC curves calculated with ROC R package
I might be missing something but I thought that AUC was a measure for
comparing ROC curves, so there is nothing else needed to "compare" them. The
larger AUC is the higher correlation of 2 variables compared. No other
measures or calculations are needed.
Jarek Tuszynski
-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch] On
2011 Aug 02
1
Problem Installing/Uninstalling Rattle
Rattle won't install properly on my Windows 7 64 bit laptop.
Here is what I've tried:
I've followed the instructions here:
http://rattle.togaware.com/rattle-install-mswindows.html
I had R installed already.
I downloaded the GTK+ packages, unzipped the 32 bit one into c:\gtkwin32.
I put c:\gtkwin32\bin in the system variables PATH.
I launched R, installed the rattle package, called
2007 Feb 13
1
New version of rattle released
A new version of Rattle (2.1.123), a Gnome-base GUI for data mining,
written copmletely in R, and available on GNU/Linux, Unix, Mac OSX, and
MS/Windows, has been released to CRAN.
There has been quite a lot of activity since the last update, including:
Transform:
Now include basic imputation of missing values. More to follow.
Models:
Move to using ada for boosting.