Displaying 20 results from an estimated 20000 matches similar to: "formula and class label"
2010 Jun 14
2
Multiple regressions
Hi,
Could you please tell me whether SVM can do multiple regression or not?
Cheers,
Amy
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2010 Jul 11
1
The formula interface of SVM
Hi
Could you please explain the line that I got from the documentation of R? does it mean that there is a difference between using and not using the formula interface with SVM ?:
If the predictor variables include factors, the formula interface must be used to get a correct model matrix.
Cheers,
Amy
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2010 Jun 15
1
cross validation of SVM
hi,
could you please tell me what kind of cross validation that SVM of e1071 uses?
Cheers,
Amy
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2010 Jan 06
1
svm
Hi,
I understand from help pages that in order to use a data set with svm, I have to divide it into two files: one for the dataset without the class label and the other file contains the class label as the following code:-
library(e1071)
x<- read.delim("mydataset_except-class-label.txt")
y<- read.delim("mydataset_class-labell.txt")
model <- svm(x, y, cross=5)
2010 Feb 03
4
contour function: changing colour according to different levels
Hi everybody,
I am using the contour function to draw isobares. And i would like to to bold contours for an interval of 500m and weak contour for an interval of 100m.
Can someone help me with this?
Thanks a lot
Karine
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2010 Mar 14
1
Error in object$tables[[v]] : subscript out of bounds
Hi,
Could you please tell me how I correct the following error message?
“Error in object$tables[[v]] : subscript out of bounds”
This is the code:
library(e1071)
data(iris)
attach(iris)
class_label <- names(iris)[1]
myformula <- formula(paste(class_label,"~ ."))
mymodel<-naiveBayes(myformula, iris,cross=3)
predict(mymodel,iris) ##Error in object$tables[[v]] :
2010 Apr 06
3
svm of e1071 package
Hello List,
I am having a great trouble using svm function in e1071 package. I have 4gb of data that i want to use to train svm. I am using Amazon cloud, my Amazon Machine Image(AMI) has 34.2 GB of memory. my R process was killed several times when i tried to use 4GB of data for svm. Now I am using a subset of that data and it is only 1.4 GB. i remove all unnecessary objects before calling
2004 Sep 14
1
how to use update if method for formula is not in namespace?
Dear R-devel,
I've noticed that if the method for formula is not exported in NAMESPACE,
then update() would fail. As an example:
> library(e1071)
> data(iris)
> iris.svm <- svm(Species ~ ., data=iris)
> update(iris.svm)
Error in eval(expr, envir, enclos) : couldn't find function "svm.formula"
The same thing happens with randomForest, because
2012 Feb 21
1
Why cant my S4 class have a slot named `C`?
Hi all,
This feature was throwing me for a loop for quite some time until I
played with the names of the slots.
Consider exhibit A:
==============
setClass("SVM",
representation=representation(
x='numeric',
y='numeric',
C='numeric',
eps='numeric'),
prototype=prototype(
x=numeric(),
2013 Jun 17
2
SVMREF infinte number of genes
dear all,
I am a student in cs college. I would like to know how to plot infinte
number of genes after using the svm.
the data set i have consists of
x which is a matrix of 39 cancer patients [rows] and 2000 gene names
[colmns]. each cell is the value of the gene for a particular patient.
there are two types of cancer people representedas factor y.
here is the code:
library(e1071)
#load
2011 May 31
1
how to store object without loosing their class property
Hello all,
I'm trying to store some objects (class = "svm") , but if I use a list
the objects get somehow converted and I can't retrieve them as objects
of type "svm".
So how to I properly store objects of that kind?
best regards
-----------
library(e1071)
data(iris)
attach(iris)
## classification mode
# default with factor response:
model <- svm(Species ~ .,
2012 Jul 25
1
Only one class shown in SVM plot?
Hello users!
I'm calculating a simple model using svm(...) from the e1071 package. So far
so good, with a linear kernel I'm getting 5 SVs. When plotting the result I
see very well separated data clouds, but the underlying color is constantly
pink, so as far as I understand no class separation is shown...
I would be happy if anyone could explain me this behaviour because I think I
have a
2019 Mar 07
4
dovecot 2.3.5 - tests fail: http payload echo (ssl)
Hi,
I was womdering, if anyone has experienced the same issues. When I run the
tests after compiling 2.3.5, the following 4 tests fail:
http payload echo (ssl): sequential .................................. : ok
http payload echo (ssl): pipeline .................................... : ok
http payload echo (ssl): parallel .................................... :
FAILED: Test is hanging
http payload
2012 Sep 06
0
Are any R packages available for Multi class Multi Label SVM?
Hi R Experts,
Just wanted to know if there's any package in R that can be used for
multi-class multi-label SVM classification(classes are not mutually
exclusive). I am using the e1071 package for multi class classifications
(here there are N mutually exclusive classes) , not sure if the same can be
used for multi class & multi label classifications as well.
Many thanks for the help in
2004 Mar 09
2
SVM unbalanced classes
Hi!
I am using R 1.8.1 and the svm of the e1071 package for classification.
The problem is that I have unbalanced classes e.g. the first one is much bigger than the second one and therfore the svm is biased to the first class.
If I manually adjust the class size the bias disappears.
The question is then how to include this unequal class distribution to the svm (e.g. via wheights or costs)?
2021 Jan 25
1
Wiki Access for Cloud SiG
Akemi,
The usernames for YatinKarel and JavierPena should be corrected now as well.
Thanks for all your assistance,
Amy
*Amy Marrich*
She/Her/Hers
Principal Technical Marketing Manager - Cloud Platforms
Red Hat, Inc <https://www.redhat.com/>
amy at redhat.com
Mobile: 954-818-0514
Slack: amarrich
IRC: spotz
<https://www.redhat.com/>
On Sun, Jan 24, 2021 at 5:52 PM Akemi
2021 Jan 24
1
Wiki Access for Cloud SiG
On Sun, Jan 24, 2021 at 1:12 PM Amy Marrich <amy at redhat.com> wrote:
> Ok updated to Camel Case - AmyMarrich. I'll let the others know as well.
>
> Thanks,
>
> Amy
>
> *Amy Marrich*
>
> She/Her/Hers
>
> Principal Technical Marketing Manager - Cloud Platforms
>
> Red Hat, Inc <https://www.redhat.com/>
>
> amy at redhat.com
>
>
2021 Jan 24
1
Wiki Access for Cloud SiG
Ok updated to Camel Case - AmyMarrich. I'll let the others know as well.
Thanks,
Amy
*Amy Marrich*
She/Her/Hers
Principal Technical Marketing Manager - Cloud Platforms
Red Hat, Inc <https://www.redhat.com/>
amy at redhat.com
Mobile: 954-818-0514
Slack: amarrich
IRC: spotz
<https://www.redhat.com/>
On Sun, Jan 24, 2021 at 1:22 PM Akemi Yagi <amyagi at gmail.com>
2021 Jan 24
1
Wiki Access for Cloud SiG
On Sat, Jan 23, 2021 at 2:38 PM Amy Marrich <amy at redhat.com> wrote:
>
> On Fri, Jan 22, 2021 at 7:58 PM Akemi Yagi <amyagi at gmail.com> wrote:
>
>> On Thu, Jan 21, 2021 at 11:50 AM Amy Marrich <amy at redhat.com> wrote:
>>
>>> I'd like to request access to
>>> https://wiki.centos.org/SpecialInterestGroup/Cloud for the following
2011 Dec 08
1
partial duplicates of dataframe rows, indexing and removal
Hello. I am trying to remove from my dataframe, those rows in which the first
7 columns are duplicated even if subsequent columns make those rows unique.
df<-data.frame(id=rep(c('amy','bob','joe') , each=5),
pet1=sample(LETTERS[1:3],15, replace=T),
pet2=sample(LETTERS[1:3],15, replace=T),
pet3=sample(LETTERS[1:5],15, replace=T))
>df
id pet1 pet2