what is the purpose of each line of this code?

Question

Shaila parvin 2013-6-29

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/80652-what-is-the-purpose-of-each-line-of-this-code

This is a code for training Neural Network:

function [net]=createff(Iin,Target)
net = newff(Iin, Target, 10, {'logsig' 'logsig'}, 'trainscg');
net.trainParam.perf = 'sse';
net.trainParam.epochs = 500;
net.trainParam.goal = 1e-5;
net.trainParam.lr=0.15;
net.trainParam.mc=0.8;
net = init(net);
net = train(net, Iin, Target);
end

Please help me to understand this code.

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Greg Heath 2013-7-1

1. delete the net = init statement because newff is self-initializing.

2. Before using a code specifying various parameter values that overwrite default values, it is probably worth your while to try using as many defaults as possible. See the examples in

help newff

doc newff

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Matthew Eicholtz 2013-6-29

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/80652-what-is-the-purpose-of-each-line-of-this-code#answer_90384

在 MATLAB Online 中打开

The first line creates a feed-forward backpropagation network. Type this in the command window to learn more:

help newff

'10' is the size of the hidden layer
'logsig' is log sigmoid transfer function
'trainscg' is scaled conjugate gradient backpropagation
'sse' is sum of squared errors
'epochs' refers to how many times to run through the training and validation sets
'goal' is the stopping criterion
'lr' is the learning rate
'mc' is the momentum constant