Question about neural network weights/biases initialization

Hi,

I'm creating a feedforward backpropagation network this way:

net = fitnet(7);

Then I set some parameters:

net.inputs{1}.processFcns = {'removeconstantrows','mapminmax'};

net.outputs{2}.processFcns = {'removeconstantrows','mapminmax'};

net.divideFcn = 'random'; % Divide data randomly

net.divideMode = 'sample'; % Divide up every sample

net.divideParam.trainRatio = 185/289;

net.divideParam.valRatio = 35/289;

net.divideParam.testRatio = 69/289;

net.initFcn = 'initlay';

net.layers{1}.initFcn = 'initnw';

net.layers{2}.initFcn = 'initnw';

net.inputWeights{1,1}.initFcn = 'rands';

net.layerWeights{1,1}.initFcn = 'rands';

net.biases{1,1}.initFcn = 'rands';

net.trainFcn = 'trainlm'; % Levenberg-Marquardt
net.performFcn = 'mse'; % Mean squared error

After that, I initialite the network as follows:

 net=init(net);

And when I want to access the weights and biases matrix:

net.IW{1,1}
net.LW{1,1}
net.b{1,1}

I just get the following answer:

Empty matrix: 7-by-0

I don't want to start training the net with all the weights set to zero. They should be random values, shouldn't they? How can I get them set to random values? Didn't I already do it when setting

net.inputWeights{1,1}.initFcn = 'rands'?

Thank you in advance

Answer 1

[Greg Heath]

 net = configure(net,inputs,targets);

 help configure
 doc configure

Hope this helps.

Greg