GANs Model Loss Function not running

I tried to run the GAN programby MATLAB(https://www.mathworks.com/help/deeplearning/ug/train-generative-adversarial-network.html). I can run other programs prior to the Model Loss Function. When I tried to run the Model Loss function section, I cant click the Run button.

function [lossG,lossD,gradientsG,gradientsD,stateG,scoreG,scoreD] = ...

modelLoss(netG,netD,X,Z,flipProb)

% Calculate the predictions for real data with the discriminator network.

YReal = forward(netD,X);

% Calculate the predictions for generated data with the discriminator

% network.

[XGenerated,stateG] = forward(netG,Z);

YGenerated = forward(netD,XGenerated);

% Calculate the score of the discriminator.

scoreD = (mean(YReal) + mean(1-YGenerated)) / 2;

% Calculate the score of the generator.

scoreG = mean(YGenerated);

% Randomly flip the labels of the real images.

numObservations = size(YReal,4);

idx = rand(1,numObservations) < flipProb;

YReal(:,:,:,idx) = 1 - YReal(:,:,:,idx);

% Calculate the GAN loss.

[lossG, lossD] = ganLoss(YReal,YGenerated);

% For each network, calculate the gradients with respect to the loss.

gradientsG = dlgradient(lossG,netG.Learnables,RetainData=true);

gradientsD = dlgradient(lossD,netD.Learnables);

end

Answer 1

[Vidip Jain]

Hi Jullian, I tried to reproduce the error but I was unable to run the file. Possible reason for this could be that you have not saved the file with appropriate extension or there is a program already running.

Also there was an error in line 4, you have passed incorrect number of arguments for the function name “forward”.