Predict a parabola with LSTM deep learning

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Giacomo Notaro 2020-3-17

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https://ww2.mathworks.cn/matlabcentral/answers/511232-predict-a-parabola-with-lstm-deep-learning

编辑： Giacomo Notaro 2020-3-17

Hi all,

I'm testing deep learning LSTM networks and I'm trying to predict a parabola, which is a non periodic function, after having succeeded in predicting periodic ones.

I obtained the first two curves with these settings:

numFeatures = 1;
numResponses = 1;
numHiddenUnits = 200;
layers = [ ...
    sequenceInputLayer(numFeatures)
    bilstmLayer(numHiddenUnits)
    fullyConnectedLayer(numResponses)
    regressionLayer];
options = trainingOptions('adam', ...
    'MaxEpochs',500, ...
    'GradientThreshold',1, ...
    'InitialLearnRate',0.005, ...
    'LearnRateSchedule','piecewise', ...
    'SequenceLength','longest',...
    'LearnRateDropPeriod',1250, ...
    'LearnRateDropFactor',0.2, ...
    'Verbose',0, ...
    'Plots','training-progress');