taken by
Yohan Chalabi. If you have any questions,
please do not hesitate to get in contact
with him.
Furthermore, Rmetrics will move this week
to his new own home, the old link via
"www.itp.phys.ethz.ch" will no longer be
active due to the reorganisat
"SVK" == "Shubha Vishwanath Karanth" <[EMAIL PROTECTED]>
on Thu, 7 Aug 2008 20:38:12 +0530
SVK> Yes Henrique... we are connecting to the internet through a proxy...
This is probably not a problem of connection.
Make sure that you have the latest version of fImport installed.
hop
"JPB" == "John P. Burkett" <[EMAIL PROTECTED]>
on Tue, 12 Aug 2008 10:46:28 -0400
JPB> Running R version 2.6.1 under Gentoo Linux and using the fPortfolio
JPB> package, I am having trouble specifying a sector constraint. One of the
JPB> constraints to be imposed is that assets
Hi,
As far as I can tell, your code looks very similar to the example of
the paper "Parameter Estimation of ARMA Models with GARCH/APARCH
Errors" available at the rmetrics website. In this paper you can also
find an example how to calculate the hessian matrix.
What is the dataset and the paramete
"C" == collonil <[EMAIL PROTECTED]>
on Mon, 18 Aug 2008 07:35:09 -0700 (PDT)
C> Hallo,
C> i want to fit a GARCH model with a extern regressor (without arma
C> components), so i found the following function in package fGarch. I tryed
C> out a lot of things but usually I get th
"HYC" == helen...@utoronto.ca
on Tue, 09 Feb 2010 22:07:27 -0500
HYC> Dear Sir/Madam,
HYC>
HYC> May I know if there is any function that estimates the ARCH
HYC> or GARCH
HYC> models based on truncated likelihood?
HYC>
HYC> Thanks,
HYC> Helen
Hi Helen,
TLE has b
"JM" == Joseph Magagnoli
on Wed, 29 Apr 2009 14:54:26 -0500
JM> > garchFit(formula.mean= ~arma(2,2),formula.var=~garch(1,1),
JM> data=data1)
JM> Error in garchFit(formula.mean = ~arma(2, 2), formula.var =
JM> ~garch(1, :
JM> element 1 is empty;
JM> the part of the args
On Aug 15, 2010, at 11:14 PM, Marius Hofert wrote:
> Dear David,
>
> thanks for the quick response. Yes, I tried "formula", but this gives the
> error "Multivariate data inputs require lhs for the formula."
>
> library(fGarch)
> spec <- garchSpec(model = list(alpha = 0.1, beta = c(0.4, 0.4)))
"JL" == Johannes Lips
on Tue, 15 Feb 2011 16:07:50 +0100
JL> Hello,
JL>
JL> I'm quite new to R but tried to learn as much as possible in
JL> the last
JL> few months.
JL> My problem is that I would like to estimate the model of Leon
JL> et al. (2005).
JL> I have s
"LFP" == Luis Felipe Parra
on Mon, 28 Mar 2011 09:10:33 +0800
LFP> Hello. I am trying to use the portfolio backtesting function
LFP> in fPortfolio
LFP> package, but I don't now why in my version of fPortfolio I
LFP> don't have either
LFP> the portfolioBactest nor the port
"CLG" == Celine LE-GOAZIGO <[EMAIL PROTECTED]>
on Mon, 2 Jun 2008 13:19:35 +0200
CLG> Hi.
CLG>
CLG> I am trying to load the package fSeries, in order to load
CLG> the package
CLG> fGarch after.
CLG> However, it says the following message.
Dear Celine,
Please make su
"SVK" == "Shubha Vishwanath Karanth" <[EMAIL PROTECTED]>
on Thu, 12 Jun 2008 12:02:25 +0530
SVK> Hi R,
SVK>
SVK>
SVK>
SVK> Please see the below commands. The question is I can see the value of
SVK> log(2) before loading the package fcalendar in R. But after loading
"CA" == "chockri adnen" <[EMAIL PROTECTED]>
on Wed, 30 Apr 2008 13:34:42 +0200
CA> My problem in a few words is as folow:
CA> I used the fCopulae packages because i have 2 series which
CA> are already
CA> transformed in the uniform domain (the space of the copulas
CA> fun
"PDJW" == "Prof. Dr. Joachim Werner" <[EMAIL PROTECTED]>
on Fri, 16 May 2008 12:55:32 +0200
PDJW> Hi,
PDJW> can anybody help me concerning ther following problem:
PDJW> We do simulations with fARMA and use the function armaSim,
PDJW> which
PDJW> requires the input paramet
"JK" == "John Kerpel"
on Tue, 16 Dec 2008 13:26:27 -0600
JK> DTB6<-alignDailySeries(DTB6, method = "interp",include.weekends = FALSE,
JK> units = NULL)
JK> Error in getDataPart() :
JK> no '.Data' slot defined for class "timeSeries"
JK>
JK>
JK> What's causing thi
"TY" == Ted Young
on Tue, 30 Dec 2008 11:53:23 -0800 (PST)
TY>
TY> Hello,
TY>
TY> I was using garchFit {fGarch} to fit some GARCH processes.
TY> I noticed that the result contains Log Likelihood value
TY> (right above
TY> Description), but when I use @fit to ret
"TB" == Ted Byers
on Tue, 27 Jan 2009 11:36:22 -0500
TB> What I have found so far includes:
TB>
TB> library(Rmetrics)
TB> time1 = timeDate(charvec = Sys.Date(), format = %Y-%m-%d,
TB> zone = ,
TB> FinCenter = )
TB> time2 = timeDate(2004-08-30, format = %Y-%m-%d, zon
"TB" == Ted Byers
on Tue, 27 Jan 2009 16:00:27 -0500
TB> I wasn't even aware I was using midnightStandard. You won't
TB> find it in my
TB> script.
TB>
TB> Here is the relevant loop:
TB>
TB> date1 = timeDate(charvec = Sys.Date(), format = %Y-%m-%d)
TB> date1
T
"TB" == Ted Byers
on Wed, 28 Jan 2009 09:30:58 -0500
TB> It is certain that all entries have the same format, but I'm
TB> starting to
TB> think that the error message is something of a red herring.
TB> Consider this:
TB>
TB> > year = 2009
TB> > week = 0
TB> > day
"TB" == Ted Byers
on Wed, 28 Jan 2009 11:25:55 -0500
TB> That the two behave the same doesn't change the assessment
TB> that the design
TB> is flawed. That doesn't mean that the function is wrong.
TB> It means only
TB> that the behaviour can be made more useful. For exa
"EN" == Elizabeth Nichols
on Thu, 05 Mar 2009 05:45:40 -0500
EN> Hello:
EN> I am trying to use fCalendar for date arithmetic and the
EN> RMySQL package
EN> for accessing a MySQL database. The fCalendar math operations
EN> seem to
EN> work fine UNTIL I load the RMySQL
"DM" == David Masson <[EMAIL PROTECTED]>
on Wed, 05 Nov 2008 15:13:37 +0100
DM> I have a question concerning avoiding loops.
DM> I know the function "apply" and I have used it several times, but I feel
DM> blocked
DM> with this situation :
DM>
DM> E <- array(X, dim =
Thanks for the report,
the problem boils down to the call of "methods:::bind_activation(TRUE)"
in one of the depended package.
I can reproduce the problem with
> methods:::bind_activation(TRUE)
> dfr <- data.frame(matrix(0, nrow = 1 , ncol = 1000))
> dfr2 <- is.na(dfr)
I will forward you remar
Hey all,
Does anyone know how we can get train set and test set for each fold of 5 fold
cross validation in Caret package? Imagine if I want to do cross validation by
random forest method, I do the following in Caret:
set.seed(12)
train_control <- trainControl(method="cv", number=5,savePredicti
Hi all,
I have a data frame with a variable Description containing text of speeches and
I would like to count number of sentences in each speech,
> str(data)
'data.frame': 255 obs. of 3 variables:
$ Group : Factor w/ 255 levels "AlzheimerGroup1","AlzheimerGroup10",..: 1
112 179 190
Hi all,
I have two data frames that one of them does not have the column ID:
> str(data)
'data.frame': 499 obs. of 608 variables:
$ ID : int 1 2 3 4 5 6 7 8 9 10 ...
$ alright : int 1 0 0 0 0 0 0 1 2 1 ...
$ bad : int 1 0 0 0 0 0 0 0 0 0 ...
But they row.names() cannot give me the IDs
On Wednesday, November 1, 2017 9:45 AM, David Wolfskill
wrote:
On Wed, Nov 01, 2017 at 04:13:42PM +, Elahe chalabi via R-help wrote:
> Hi all,
> I have two data frames that one of them does not have the column ID:
>
>
;- merge(training,data,by=intersect(names(training),names(data)))
HTH,
Eric
On Wed, Nov 1, 2017 at 6:13 PM, Elahe chalabi via R-help
wrote:
Hi all,
>I have two data frames that one of them does not have the column ID:
>
>> str(data)
>'data.frame': 499
Hi all,
I have the following data and I have a histogram for mms like
ggplot(hist,aes(x=hist$mms))+
geom_histogram(binwidth=1,fill="white",color="black")and then I want to fill
the color of histogram by probable=1 and probable=0, could anyone help me in
this?
My data:
structure(list(pr
Hi all,
How can I overlay these two histograms?
ggplot(gg, aes(gg$Alz, fill = gg$veg)) + geom_histogram(alpha = 0.2)
ggplot(tt, aes(tt$Cont, fill = tt$veg)) + geom_histogram(alpha = 0.2)
thanks for any help!
Elahe
__
R-help@r-project.org mailing list
Hi all,
I have built a Random Forest using Caret package, however, I don't understand
how the splits are labeled in trees. My dataset contains the frequency of the
words in the speeches of the people:
'data.frame': 499 obs. of 608 variables:
$ alright : num 1 0 0 0 0 0 0 1 2 1 ...
$ bad : n
Hi,
Does anyone know what is maximal term length in Document Term Matrix?
<>
Non-/sparse entries: 8081/210709
Sparsity : 96%
Maximal term length: 12
Weighting : term frequency (tf)
Thanks for any help!
Elahe
__
R-help@r-project.org
Hi all,
I have a text classification task which is classification of a Control group
and Alzheimer group texts. I have generated DocumentTermMatrix for both groups
and then created a list with one extra element showing the group name if it's
Alzheimer or control group, for example for the Alzhe
Hi all,
Does anyone know what is the best way to visualize KNN(K nearest neighbor)
results for classification of texts in R?
My data set has only speeches and the type of the people for them which is
control group or Alzheimer group, KNN classifies these two groups for me but I
don't know how
Any idea?!
On Sunday, May 7, 2017 5:56 PM, Elahe chalabi via R-help
wrote:
Hi all,
Does anyone know what is the best way to visualize KNN(K nearest neighbor)
results for classification of texts in R?
My data set has only speeches and the type of the people for them which is
Thanks for your reply. What I exactly have is a data frame with rows containing
words which have been used in each speech and columns containing frequency of
these words, I have an extra row showing the type of the speech whether it was
from a control group or Alzheimer group. Then I create a
Hi all,
I'm using Rstudio 64 bit version3.2.5 and I faced a problem installing caret
package,the error is :
Loading required package: lattice
Loading required package: ggplot2
Error : object ‘sigma’ is not exported by 'namespace:stats'
Error: package or namespace load failed for ‘caret’
how sho
Hi all,
I'm running train function from caret package on my data set patientdata:
model=train(type~., data=patientdata, method="lvq", preProcess="scale",
trControl=control)
and I get this error:
Error in comp(expr, env = envir, options = list(suppressUndefined = TRUE))
:
could n
Any answer?!
On Friday, May 19, 2017 6:33 AM, Elahe chalabi via R-help
wrote:
Hi all,
I'm running train function from caret package on my data set patientdata:
model=train(type~., data=patientdata, method="lvq", preProcess="scale",
trControl=cont
Hi all,
I have applied Random Forest on my data and divided data into test and rain set
to see the prediction results and it seems good cause the accuracy is 82%. Now
my question is how can I plot MDS on predicted data? here is my code:
spl=sample.split(df$PatientType,SplitRatio = 0.7)
Thanks for your reply Bert. But the question on how to plot MDS on predicted
data I guess belong to here!
On Thursday, May 25, 2017 9:43 AM, Bert Gunter wrote:
Elahe:
On Thu, May 25, 2017 at 8:15 AM, Elahe chalabi via R-help
wrote:
> Hi all,
> I have applied Random Forest on m
Hi all,
Is there a way in R to count the number of stop words (English) of a string
using tm package?
str="Mhm . Alright . There's um a young boy that's getting a cookie jar . And
it he's uh in bad shape because uh the thing is falling over . And in the
picture the mother is washing dishes and
lish"))
Patrick Casimir, PhD
Health Analytics, Data Science, Big Data Expert & Independent Consultant
C: 954.614.1178
From: R-help on behalf of Bert Gunter
Sent: Monday, June 12, 2017 10:12:33 AM
To: Elahe chalabi
Cc: R-help Mailing List
Subject:
AM, Patrick Casimir wrote:
You can define stop words as below.
data <- tm_map(data, removeWords, stopwords("english"))
Patrick Casimir, PhD
Health Analytics, Data Science, Big Data Expert & Independent Consultant
C: 954.614.1178
From: R-help
Hi all,
I would like to get ideas about how to fill out a PDF form in R and to know if
it's possible or not. I could not find something helpful in Internet.
Does anyone know a good link for that or have experience in this?
Thanks for any help!
Elahe
Hi all,
I would like to do cross validation in random forest using rfcv function. As
the documentation for this package says:
rfcv(trainx, trainy, cv.fold=5, scale="log", step=0.5, mtry=function(p) max(1,
floor(sqrt(p))), recursive=FALSE, ...)
however I don't know how to build trianx and train
Hi all,
I would like to do cross validation in random forest using rfcv function. As
the documentation for this package says:
rfcv(trainx, trainy, cv.fold=5, scale="log", step=0.5, mtry=function(p) max(1,
floor(sqrt(p))), recursive=FALSE, ...)
however I don't know how to build trianx and tr
Any responds?!
On Wednesday, August 23, 2017 5:50 AM, Elahe chalabi via R-help
wrote:
Hi all,
I would like to do cross validation in random forest using rfcv function. As
the documentation for this package says:
rfcv(trainx, trainy, cv.fold=5, scale="log", step=0.5, mtry=
Hi all,
I have tried a 5 fold cross validation using caret package with random forest
method on iris dataset as example. Then I need ROC curve for each fold:
> set.seed(1)
> train_control <- trainControl(method="cv", number=5,savePredictions =
TRUE,classProbs = TRUE)
> output <- train(S
Hi all,
I have a document term matrix and I would like to have a heatmap (geom_tile)
for 20 most associated words to a specific word in it. Here is my dtm:
corpus=Corpus(VectorSource(data$Message))
corpus=tm_map(corpus,tolower)
corpus=tm_map(corpus,removePunctuation)
corpus=tm_map(corpus,rem
Hi all,
I have 16630 Messages in my data frame and I would like to count number of
verbs in each message, to do so I have the following code:
> str(tar)
'data.frame': 16630 obs. of 2 variables:
$ Message : Factor w/ 13412 levels "","'alter database datafile'
needs to be executed",..
Hi all,
In my df I would like to generate a new column which contains a string showing
all the verbs in each row of df$Message.
> library(openNLP)
> library(NLP)
> dput(df)
structure(list(DocumentID = c(478920L, 510133L, 499497L, 930234L
), Message = structure(c(4L, 2L, 3L, 1L), .Label = c
Hi all,
I have the following data for which I create a document term matrix first and
then I add the time available to the dtm. In order to see the correlations to
the term "updat" in the different years, I would like to have a heat-map for
findassoc in a way that x-axis shows the time.
Hi all,
How is it possible to subset English text from a df containing German and
English texts using textcat package?
> library(textcat)
> dput(data)
structure(list(x = structure(c(2L, 6L, 5L, 3L, 1L, 4L), .Label = c("Dieses
Buch ist erstaunlich",
"I love this book", "ich
Hi everyone,
I'm new in trying Shiny app in R and for the following question I need your
help. I have a Random Forest model built with Caret Package on iris data set
and then with Shiny I need a UI which I can upload a .csv file as the test set
and give it to the trained model and then see what
Hi all,
I have a small dataframe and I would like to show in a network plot how words
are related to the word "problem" with arrows (keeping the order of the words
in sentences).
Here's the df:
dput(df)
structure(list(text = structure(c(1L, 7L, 3L, 4L, 5L, 6L, 2L), .Label =
c(
########
#From: R-help On Behalf Of Elahe chalabi via
R-help Sent: Wednesday, January 30, 2019 5:16 AM
# I ran this
net1 <- structure(list(text = structure(c(1L, 7L, 3L, 4L, 5L, 6L, 2L), .Label =
c("account block solv problem",
"exactly proble
Hi all,
I have a data frame containing serial numbers for US. I also have a column
showing the city in US, now my question is is there a package in R able to get
the city in US as input and then return the name of State for that city?!
Thanks for any help!
Elahe
___
Hi all,
I found an answer to the last question I asked in this group and now I want to
have a correct subset of my data:
I have a following df1 which is list of all cities in US and their states:
$ name : Factor w/ 1008 levels "Ackley","Ackworth",..: 1 2 3
$ state: Factor w/ 1 l
Hi all,
I have the prediction for my test set which are forecasted Value for "4/1/2020"
for each match of "id" and "Group". I would like to add a fourth row to each
group by (Group,id) in my train set and the values for this row should come
from test set :
my train set:
structure(list(D
Hi all,
I have the following data frame
dput(df)
structure(list(Department = c("A", "A", "A", "A", "A", "A", "A",
"A", "B", "B", "B", "B", "B", "B", "B", "B"), Class = c(1L, 1L,
1L, 1L, 2L, 2L, 2L, 2L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L), Value = c(0L,
100L, 800L, 800L, 0L, 300L, 1200L, 1200
-Liebig-University Giessen
Tel: +49-(0)641-99-32104 Arndtstr. 2, 35392 Giessen, Germany
http://www.uni-giessen.de/eichner
-
Am 11.05.2021 um 13:11 schrieb Elahe chalabi via R-help:
> Hi all,
>
> I have the follo
min(x[x>0]))
Cheers
Petr
> > -Original Message-
> > From: R-help On Behalf Of Elahe chalabi
> via
> > R-help
> > Sent: Tuesday, May 11, 2021 1:12 PM
> > To: R-help Mailing List
> > Subject: [R] Group by and duplicate a value/dplyr
> >
Hi everyone,
I have the following dataframe:
structure(list(Department = c("A", "A", "A", "A", "A", "A", "A",
"A", "B", "B", "B", "B", "B", "B", "B", "B"), Class = c(1L, 1L,
1L, 1L, 2L, 2L, 2L, 2L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L), Value = c(0L,
100L, 800L, 800L, 0L, 300L,
Hello everyone,
I have the following dataframe
library(dplyr)
dput(df)
structure(list(Freq = c(19L, 19L, 18L, 15L, 14L, 13L, 13L, 12L,
11L, 11L, 11L, 10L, 10L, 10L, 10L, 10L, 10L, 10L, 9L), word1 =
structure(c(3L,
11L, 5L, 6L, 11L, 3L, 7L, 10L, 8L, 11L, 13L, 1L, 1L,
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