How to give multiple inputs to the train function of Neural Network?

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MathWorks Support Team 2017-9-1

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回答： Marcelo Olmedo 2020-5-6

I am creating a neural network in MATLAB and am trying to feed it multiple inputs. How do I define the inputs and feed them into the network? If input 1 is some matrix of numbers and input 2 is another matrix of numbers, how do I correctly define both inputs? And then how do I feed them into the network?

For example, if I do "train(net,input,target)", then how do I send all of the inputs?

Also, how do I connect both the input blocks to the network?

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Answer 1

MathWorks Support Team 2017-9-1

8
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/355286-how-to-give-multiple-inputs-to-the-train-function-of-neural-network#answer_280355

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Consider the following examples:

Given two inputs, x1 and x2 - You can create a cell array, x which can be then passed to the "train" function.

x1 =  [4 5 6];
x2 =  [0 1 0];
x = {x1;x2};
t = [0 0 1];
net = feedforwardnet;
net.numinputs = 2;
net = configure(net,x);
net = train(net,x,t);
view(net)

For both the input blocks to be connected to the neural network, there are multiple ways depending on the architecture you require:

You can connect the inputs to the network by altering the "inputConnect" property of the neural network as below:

x1 =  [4 5 6];
x2 =  [0 1 0];
x = {x1;x2};
t = [0 0 1];
net = feedforwardnet;
net.numinputs = 2;
net.inputConnect = [1 1; 0 0];
net = configure(net,x);
net = train(net,x,t);
view(net)

or

x1 =  [4 5 6];
x2 =  [0 1 0];
x = {x1;x2};
t = [0 0 1];
net = feedforwardnet;
net.numinputs = 2;
net.inputConnect = [1 0; 0 1];
net = configure(net,x);
net = train(net,x,t);
view(net)