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how to multiply the input vector and weight matrix (X*iw+b)

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prabakaran jayaraman
回答： Greg Heath 2015-8-28
Mr greg suggested output = repmat(b2,1,N) + LW*tanh(repmat(b1,1,N)+ IW*input). in this equation i am having 3 input and iw matrix of size 20X3.how to multiply three inputs vector and weight matrix

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Greg Heath
Greg Heath 2015-8-28
The MAT in MATLAB stands for MATRIX. If
size(IW) = [ 20 3 ]
size(x) = [ 3 N ]
Then the matrix multiplication command yields
size(IW*x) = [ 20 N ];
Hope this helps.
Thank you for formally accepting my answer
Greg

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