R help - Feb 2012 - neuralnet problem

Hello List !

I'm a bright new R user, and I encounter a problem when trying to use the
neuralnet package.
I have a training set with 8 inputs, and there are 3 outputs (I need 3 distinct
neurones as output). Although I read the examples, and the package article, I
don't know how to tell R there are 3 outputs (3 outputs neurones).

Here is my actual code :

# All = input data
All <- read.table('in.dat')
colnames(All) <- paste('col',1:ncol(All),sep='')
# Val = target values, matrix of n rows X 3 columns
Val <- read.table('target.dat')

# create dataframe
dt <- data.frame(Val,All)

nn <- neuralnet(Val ~ col1+col2+col3+col4+col5+col6+col7+col8,data=dt)

Is there someone kind enough to correct my code ? 

Many many thanks in advance !!

Luc




----------------------------------------------------------------
Dr. Luc Moulinier,
Laboratoire de Biologie et G?nomique Int?gratives
IGBMC
1, rue Laurent Fries
67 404 ILLKIRCH Cedex
Phone : +33 (0)3 88 65 32 79

I've never used neuralnet, but if this is like other modelling
functions in R, you need to put the column names corresponding to the
outputs, not the name of the object they came from. They might have
been changed in creating the data frame so take a look at
colnames(dt)

Hope that helps,

Michael

On Wed, Feb 15, 2012 at 3:31 PM, Luc MOULINIER <moumou at igbmc.fr>
wrote:
> Hello List !
>
> I'm a bright new R user, and I encounter a problem when trying to use
the neuralnet package.
> I have a training set with 8 inputs, and there are 3 outputs (I need 3
distinct neurones as output). Although I read the examples, and the package
article, I don't know how to tell R there are 3 outputs (3 outputs
neurones).
>
> Here is my actual code :
>
> # All = input data
> All <- read.table('in.dat')
> colnames(All) <- paste('col',1:ncol(All),sep='')
> # Val = target values, matrix of n rows X 3 columns
> Val <- read.table('target.dat')
>
> # create dataframe
> dt <- data.frame(Val,All)
>
> nn <- neuralnet(Val ~ col1+col2+col3+col4+col5+col6+col7+col8,data=dt)
>
> Is there someone kind enough to correct my code ?
>
> Many many thanks in advance !!
>
> Luc
>
>
>
>
> ----------------------------------------------------------------
> Dr. Luc Moulinier,
> Laboratoire de Biologie et G?nomique Int?gratives
> IGBMC
> 1, rue Laurent Fries
> 67 404 ILLKIRCH Cedex
> Phone : +33 (0)3 88 65 32 79
>
> ______________________________________________
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> https://stat.ethz.ch/mailman/listinfo/r-help
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http://www.R-project.org/posting-guide.html
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