Manual Neural Network Wizard

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Conor O' Sullivan 2015-1-15

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https://ww2.mathworks.cn/matlabcentral/answers/170090-manual-neural-network-wizard

编辑： Greg Heath 2015-1-18

Hi all,

I've tried looking around to figure this one out, but time is against me so here I am.

Basically, I've developed a really good network with the help of the NN wizard. Great. However, due to a complication, I need to essentially do the same network, but with different transfer functions (Hardlimit).

I've tried developing the network from scratch with code, but I just can't get it to work, and I've tried the nntool command too, but I can't seem to clarify the test/val/train split, or plot a good roc or confusion matrix.

Essentially, the wizard is great, but I need simpler transfer functions to code elsewhere.

Thanks all,

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Greg Heath 2015-1-17

编辑：Greg Heath 2015-1-18

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Insufficient detail.

However, I suspect the reason that training failed is because hardlim is not differentiable.

I don't think anyone is going to try to help you unless you describe your problem in much more detail.

For example, why do you believe you have to have hardlim as an output transfer function? It makes no sense to me.

You don't explain

Type of problem 
Dimensions of input and output vectors
Amount of data
Type of net
Number of hidden nodes
Type of transfer functions
Non-default parameter choices
Normalized quantitative results e.g., 
   NMSE = mse(error)/mean(var(target',1))