R help - Feb 2011 - caret::train() and ctree()

Like earth can be trained simultaneously for degree and nprune, is there a way
to train ctree simultaneously for mincriterion and maxdepth?

Also, I notice there are separate methods ctree and ctree2, and if both options
are attempted to tune with one method, the summary averages the option it
doesn't support.  The full log is attached, and notice these lines below for
method="ctree" where maxdepth=c(2,4) are averaged to maxdepth=3.

Fitting: maxdepth=2, mincriterion=0.95 
Fitting: maxdepth=4, mincriterion=0.95 
Fitting: maxdepth=2, mincriterion=0.99 
Fitting: maxdepth=4, mincriterion=0.99

  mincriterion  Accuracy  Kappa  maxdepth  Accuracy SD  Kappa SD  maxdepth SD
  0.95          0.939     0.867  3         0.0156       0.0337    1.01       
  0.99          0.94      0.868  3         0.0157       0.0337    1.01       

I use R 2.12.1 and caret 4.78.

Andrew


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Andrew,

ctree only tunes over mincriterion and ctree2 tunes over maxdepth
(while fixing mincriterion = 0).

Seeing both listed as the function is being executed is a bug. I'll
setup checks to make sure that the columns specified in tuneGrid are
actually the tuning parameters that are used.

Max

On Wed, Feb 16, 2011 at 12:01 PM, Andrew Ziem <AZiem at us.ci.org>
wrote:
> Like earth can be trained simultaneously for degree and nprune, is there a
way to train ctree simultaneously for mincriterion and maxdepth?
>
> Also, I notice there are separate methods ctree and ctree2, and if both
options are attempted to tune with one method, the summary averages the option
it doesn't support. ?The full log is attached, and notice these lines below
for method="ctree" where maxdepth=c(2,4) are averaged to maxdepth=3.
>
> Fitting: maxdepth=2, mincriterion=0.95
> Fitting: maxdepth=4, mincriterion=0.95
> Fitting: maxdepth=2, mincriterion=0.99
> Fitting: maxdepth=4, mincriterion=0.99
>
> ?mincriterion ?Accuracy ?Kappa ?maxdepth ?Accuracy SD ?Kappa SD ?maxdepth
SD
> ?0.95 ? ? ? ? ?0.939 ? ? 0.867 ?3 ? ? ? ? 0.0156 ? ? ? 0.0337 ? ?1.01
> ?0.99 ? ? ? ? ?0.94 ? ? ?0.868 ?3 ? ? ? ? 0.0157 ? ? ? 0.0337 ? ?1.01
>
> I use R 2.12.1 and caret 4.78.
>
> Andrew
>
>
>
> ______________________________________________
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http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
>


-- 

Max