R help - Oct 2020 - Help using the exclude option in the neuralnet package

Good Morning,

I am using the neuralnet package in R, and am able to produce some basic neural
nets, and use the output.

I would like to exclude some of the weights and biases from the iteration
process and fix their values.

However I do not seem to be able to correctly define the exclude and
constant.weights vectors.

Question:  Can someone point me to an example where exclude and contant.weights
are used.  I have search the R help archive, and haven't found any examples
which use these on the web.

Thank you in advance for any help.

Sincerely

Dan

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Hi Dan,

the easiest way to declare `exclude` and `constant.weights` is as a 
vector of indices. You can determine the index of the neuron as follows:

The layers are arranged in sequence, with the bias neuron being the 
first in each layer. So in a neural net with 6 input neurons and a layer 
of 3 hidden neurons, the bias neurons would be at indices 1 and 8.

HTH.

Sebastian