I am trying to replace the objective function of neural network to customised one
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I am trying to estimate the parameters using nueral networks with multiple layres for this equation; y = x1*x2*(alpha1) + x3*(alpha2), where x1, x2 and x3 are the inputs and y is the output. The neural network architecture is as follow, three inputs (x1,x2,x3) and two outputs (alpha1,alpha2) with multiple hidden layers. The objetive function will be as follow: e = [y - (x1*x2*(alpha1) + x3*(alpha2))], however, I can't change the perform.Fnc in matlab to customized one. I get the following error [performFcn" must be '' or the name of a network performance function], How can I solve this problem ? How can I use the estimated outputs from the NN as parameters inside the objective function? How to change the net.perform.Fcn from built-in ones to the one that I created ?
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