I applied bootpred for multinomial logistic reg. (with nnet package). I used
same as theta.fit and theta.predict of R for my data. but give me error. Can I
do this with
response vriable;7 levels
predictor variables:5 (1 classifier, 4 continuous)?
Thanks alot
Azam
[[alternative HTML version deleted]]
On 09.06.2010 13:26, azam jaafari wrote:> I applied bootpred for multinomial logistic reg. (with nnet package). I used same as theta.fit and theta.predict of R for my data. but give me error. Can I do this with > response vriable;7 levels > predictor variables:5 (1 classifier, 4 continuous)? > > Thanks alot > Azam > > > > > [[alternative HTML version deleted]] > > > > > ______________________________________________ > R-help at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code.Yes, PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. otherwise it is hard to help without your code and without any error message. Uwe Ligges
Thank you very much
I used bootpred for multinomial logistic reg. similar below:
theta.fit <- function(x,y){lsfit(x,y)}
theta.predict <- function(fit,x){
cbind(1,x)%*%fit$coef
}
sq.err <- function(y,yhat) { (y-yhat)^2}
results <- bootpred(x,y,20,theta.fit,theta.predict,
err.meas=sq.err)
x=data
mlr=multinom(y~x1+x2+x3+x4+x5, data)
after run results:> results <- bootpred(data, mlr,50,theta.fit,theta.predict,
sq.err)
Error in as.vector(data) :
no method for coercing this S4 class to a vector
Is it incorrect?
Azam
--- On Wed, 6/9/10, Uwe Ligges <ligges@statistik.tu-dortmund.de> wrote:
From: Uwe Ligges <ligges@statistik.tu-dortmund.de>
Subject: Re: [R] bootpred for multinomial
To: "azam jaafari" <azamjaafari@yahoo.com>
Cc: "R-help" <r-help@r-project.org>
Date: Wednesday, June 9, 2010, 5:46 AM
On 09.06.2010 13:26, azam jaafari wrote:> I applied bootpred for multinomial logistic reg. (with nnet package). I
used same as theta.fit and theta.predict of R for my data. but give me error.
Can I do this with
> response vriable;7 levels
> predictor variables:5 (1 classifier, 4 continuous)?
>
> Thanks alot
> Azam
>
>
>
>
> [[alternative HTML version deleted]]
>
>
>
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
Yes, PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html and provide commented,
minimal, self-contained, reproducible code.
otherwise it is hard to help without your code and without any error
message.
Uwe Ligges
[[alternative HTML version deleted]]
On 09.06.2010 15:15, azam jaafari wrote:> Thank you very much > > I used bootpred for multinomial logistic reg. similar below: > theta.fit<- function(x,y){lsfit(x,y)} > theta.predict<- function(fit,x){ > cbind(1,x)%*%fit$coef > } > sq.err<- function(y,yhat) { (y-yhat)^2} > results<- bootpred(x,y,20,theta.fit,theta.predict, > err.meas=sq.err) > > x=data > mlr=multinom(y~x1+x2+x3+x4+x5, data) > > after run results: >> results<- bootpred(data, mlr,50,theta.fit,theta.predict, sq.err) > Error in as.vector(data) : > no method for coercing this S4 class to a vector > > Is it incorrect?First guess: bootpred() is from the "bootstrap" packages (you just told about nnet). From that help page (?bootpred): x a matrix containing the predictor (regressor) values. Each row corresponds to an observation. And your data is some S4 class object, obviously, but bootpred expects a matrix according to the docs .... Uwe Ligges> Azam > > > > > > > > --- On Wed, 6/9/10, Uwe Ligges<ligges at statistik.tu-dortmund.de> wrote: > > > From: Uwe Ligges<ligges at statistik.tu-dortmund.de> > Subject: Re: [R] bootpred for multinomial > To: "azam jaafari"<azamjaafari at yahoo.com> > Cc: "R-help"<r-help at r-project.org> > Date: Wednesday, June 9, 2010, 5:46 AM > > > > > On 09.06.2010 13:26, azam jaafari wrote: >> I applied bootpred for multinomial logistic reg. (with nnet package). I used same as theta.fit and theta.predict of R for my data. but give me error. Can I do this with >> response vriable;7 levels >> predictor variables:5 (1 classifier, 4 continuous)? >> >> Thanks alot >> Azam >> >> >> >> >> [[alternative HTML version deleted]] >> >> >> >> >> ______________________________________________ >> R-help at r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. > > > Yes, PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html and provide commented, > minimal, self-contained, reproducible code. > > otherwise it is hard to help without your code and without any error > message. > > Uwe Ligges > > > > > > [[alternative HTML version deleted]] > > > > > ______________________________________________ > R-help at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code.