MATLAB to Keras conversion Help

Could you please help me covert MATLAB code to Keras.

inputSize = 3; 
numResponses = 2 ; 
numHiddenUnits1 = 25;
numHiddenUnits2 = 20;
layers = [ ... sequenceInputLayer(inputSize)
                     lstmLayer(numHiddenUnits1) 
                     lstmLayer(numHiddenUnits2)
                     fullyConnectedLayer(numResponses)
                     regressionLayer
              ];
opts = trainingOptions('adam', ... 
'MaxEpochs',500, ... 
'GradientThreshold',1, ... 
'InitialLearnRate',0.2, ... 
 'LearnRateSchedule','piecewise', ...
 'LearnRateDropPeriod',125, ...
 'LearnRateDropFactor',0.2, ... 
 'Verbose',0, ... 
 'Plots','training-progress');

I’m unable to find an equivalent for the trainingOptions in MATLAB in keras for these parameters:

  • GradientThreshold
  • InitialLearnRate
  • LearnRateSchedule
  • LearnRateDropPeriod
  • LearnRateDropFactor