Displaying 4 results from an estimated 4 matches for "gradifst".
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gradient
2001 Jun 28
0
: k-fold cross validation for fda,mda etc
...and another for responses, whereas the function fda(),
using the formula argument only.
Is there another way of doing k-fold cross validation for functions
which only have the formula argument, like for fda() and mda() ?
Peter
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Peter Ho GradIFST
Escola Superior de Biotecnologia
Universidade Cat?lica Portuguesa
Rua Dr. Ant?nio Bernardino de Almeida
4200-072 Porto
Portugal
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r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "i...
2001 Jun 08
1
:predict.ppr
...s. There is a link to predict.ppr
in the index for modreg, but that link is to the help for ppr().
Has predict.ppr() not been implemented?
If not, does anyone have a suggestion as to how to implement
predict.ppr() in R?
Thanks
Peter
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Peter Ho GradIFST
Escola Superior de Biotecnologia
Universidade Cat?lic Portuguesa
Rua Dr. Ant?nio Bernardino de Almeida
4200 Porto
Portugal
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info&qu...
2001 May 08
3
Replacing missing values
I'm discovering R (very impressive), and didn't find in the docs a simple
method for replacing, in a data frame, missing values (NA) with the
column's mean (or any other method for reconstructing missing values when
needed).
Thanks in advance for your help.
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r-help mailing list -- Read
2001 Nov 10
0
Summary: Teaching with R a quick survey.
...ork.
For the next semester, I intend to introduce R in a class on Shelf-life
testing.
This will be based on regression analysis and introducing shelf-life models,
such as those based on the Weibull distribution.
Peter
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Peter Ho GradIFST
Departamento de Ci?ncias de Engenharia e Tecnol?gica
Escola Superior de Tecnologia e Gest?o
Instituto Polit?nico de Viana do Castelo
Avenida do Atl?ntico- Apartado 574
4901-908 Viana do Castelo
Email: peter at estg.ipvc.pt
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Current use
@ Vienna University o...