How Does Matlab Neural Network Toolbox Preprocess Data?

조회 수: 1 (최근 30일)
Christian Kruschel
Christian Kruschel 2016년 9월 5일
답변: Greg Heath 2016년 9월 6일
I try to analyse my neural network trained via Neural Network Toolbox and Matlab 2016a. I was wondering how Matlab preprocesses data. I tried the following: X = -1:.1:1, Y = purelin(2*tansig(X) + tanig(X) -2) and trained a Feedforward Net, lets call it "net", with one hidden Layer and two neurons with tansig activations. I thought net(X(k)) is the same as purelin(net.LW{2,1}*tansig(net.IW{1}*X(k)-net.b{1})-net.b{2}) for any feasible index k, but this is not right. What did I do wrong or is there some hidden preprocessing?
Thanks for any answer!

답변 (1개)

Greg Heath
Greg Heath 2016년 9월 6일
You forgot the default input and target normalization with MAPMINMAX followed by the output denormalization.
Hope this helps.
Thank you for formally accepting my answer
Greg

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