layers = [imageInputLayer([32 32 3])
          fullyConnectedLayer(50)
          reluLayer
          fullyConnectedLayer(50)
          reluLayer
          fullyConnectedLayer(10)
          softmaxLayer
          classificationLayer];
options = trainingOptions('sgdm',...
     'MiniBatchSize', 8192,...
     'ValidationData', {xValid, tValid},...
     'ValidationFrequency', 30,...
     'MaxEpochs',400,...
     'Plots', 'Training-Progress',...
     'L2Regularization', 0, ...
     'Momentum', 0.9, ...
     'ValidationPatience', 3, ...
     'Shuffle', 'every-epoch', ...
     'InitialLearnRate', 0.001);