How do I see the weight and biases variables in neural networks, please show me on simple example code?

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Radek
Radek 2015-6-2
回答： Gene Pennello 2022-2-25
How do I see the weight and biases variables in neural networks, please show me on simple example code?

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Matthew Eicholtz
Matthew Eicholtz 2015-6-2
You can find some code examples using the Neural Network Toolbox here.
Copying from there, one example deals with classifying the sex of crabs.
[x,t] = crab_dataset; %load the dataset
net = patternnet(10); %create the network
[net,tr] = train(net,x,t); %train the network
Now, you can find the weights and biases by looking at net .
w1 = net.IW{1} %the input-to-hidden layer weights
w2 = net.LW{2} %the hidden-to-output layer weights
b1 = net.b{1} %the input-to-hidden layer bias
b2 = net.b{2} %the hidden-to-output layer bias
Hope this helps.

更多回答（2 个）

Ava harry
Ava harry 2019-9-10
How about havng 2 hidden layers? how can I extract bias and weights between them?
Gene Pennello
Gene Pennello 2022-2-25
https://www.mathworks.com/matlabcentral/answers/398531-how-to-manually-calculate-a-neural-network-output

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