Error using network/subsref (line 198) Index exceeds matrix dimensions. Error in Pelatihan (line 70) net.IW{1,3};

1 次查看（过去 30 天）
Novy Bua Rante
Novy Bua Rante 2018-3-13
回答： Zuber Khan 2024-9-24
net = newff(input,target,[10 5],{'logsig','logsig'},'trainlm'); net.performFcn = 'mse'; net.trainParam.epochs = 1000; net.trainParam.goal = 1e-6; net.trainParam.mc = 0.95; net.trainParam.lr = 0.1; net.outputConnect, net.biasConnect; net.IW{1,1}; net.LW{3,1}; net = train(net,input,target); output = round(sim(net,input)); save net.mat net

请先登录，再回答此问题。

回答（1 个）

Zuber Khan
Zuber Khan 2024-9-24
Hi,
The error message that you are encountering suggests that you are trying to access an index in a cell array that doesn't exist. Specifically, in the following line of code,
net.IW{1,3};
you are trying to access the third column of the input weight matrix for the first layer, which likely doesn't exist given your network architecture.
The following command,
newff(input, target, [10 5], {'logsig', 'logsig'}, 'trainlm');
establishes a feed-forward backpropagation neural network consisting of two hidden layers where:
  • The first layer contains 10 neurons.
  • The second layer contains 5 neurons.
Note that that the following code line,
net.IW{1,1}
is used to get the weights for the input layer.
Therefore, you are getting an error when you are executing the code line "net.IW{1,3}" since ideally the column index must not exceed 1 here.
For more clarity, you can use the following command to see a graphical representation of your network.
view(net);
I hope this will address your concerns.
Regards,
Zuber

类别

在 Help Center 和 File Exchange 中查找有关 Define Shallow Neural Network Architectures 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by