Thank you Max Kuhn,
So I decided to install caret (R version 2.6.0, gcc 4.1.2, caret 3.08,
slackware 12 and kernel 2.6.17.11), and I've got a problem:
R CMD INSTALL caret
* Installing to library '/usr/local/lib/R/library'
* Installing *source* package 'caret' ...
** libs
//(it goes with no problem..)
//here comes the bug
** building package indices ...
Error in load(zfile, envir = envir) : error reading from connection
Calls: <Anonymous> ... .build_data_index -> list_data_in_pkg -> <Anonymous>
-> switch -> load
Execution halted
ERROR: installing package indices failed
** Removing '/usr/local/lib/R/library/caret'
Any ideas?
On Dec 8, 2007 3:38 PM, Max Kuhn <[EMAIL PROTECTED]> wrote:
> >
> > 1. can I measure de R-squared value between the predicted(by the model)
> and
> > real (observed) values.?
> > 2. Measure the RMSE error .
> >
>
> There is a function in the caret package called postResample that will
> do that (even if you aren't using resampling).
>
> As has been previously noted on this list, there are a number of
> formulas for R-squared. This function uses the square of the
> correlation between the observed and predicted. The next version of
> caret will offer a choice of formulas.
>
> --
>
> Max
>
--
Best regards,
Giovane
[[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.
