From: Prof Brian Ripley (firstname.lastname@example.org)
Date: Wed 05 May 2004 - 01:29:43 EST
On Tue, 4 May 2004, Tarca Adi Laurentiu wrote:
> Hi I got two questions about the nnet function in R. I would be thankful to
> have an answer.
I don't think you have consulted the book this R code supports: please do
> 1) Does the function intrinsically normalize the X and Y matrices before
> the training, or normalization should be
> done by the user.
The documentation (p.247) answers that.
> 2) I need to understand the $wts matrix. I do imagine that it is a single
> column transformation of the two
> matrices of weighs (input to hidden Ninputs+1 x Nodes) and hidden to output
> (Nodes+1 x Noutputs).
There are no `matrices' of weights, just weights along links in the
network. See the documentation for all the details.
-- Brian D. Ripley, email@example.com Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595
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