How can I manually evaluate my data to validate my neural network?

Technical Source
1 min readJul 20, 2021

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I would like to validate the data which my neural network is generating, but when I follow the steps in the doc, I receive a different answer than what is generated by my neural network.

ANSWER

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To replicate the calculations of a neural network, you must:

1) Pre-process the inputs.

2) Perform the calculations using the correct weights, biases, transfer functions, and connections.

3) Post-process the outputs.

The following example replicates the output of a 2 layer feed-forward backpropogation network.

inputs = [0 1 2 3 4 5 6 7 8 9 10];% inputs = inputs + .1 *rand(size(inputs));targets = [0 1 2 3 4 3 2 1 2 3 4];% Create a network with 1 neuron in the first layernet=newff(inputs,targets,1,{'tansig','tansig'},'trainlm');% Train the networknet = init(net);

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Technical Source
Technical Source

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