Problem using scalingLayer for shifting actor outputs to desired range

Question

Mostafa Nazmi 2021-1-30

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/731438-problem-using-scalinglayer-for-shifting-actor-outputs-to-desired-range

评论： Mostafa Nazmi 2021-2-16

Greetings everyone. I want to use scalingLayer to shift my actor network's outputs to desired range. I'm using this reference and the code below :

numObs = 10;
numAct = 5;
actorLayerSizes = [400 300];
sc = reshape([10, 10, 20, 15, 15], [1 1 5]);
bias = reshape([0, 0, 0, 0, 0], [1 1 5]);
actorNetwork = [
    imageInputLayer([numObs 1 1],'Normalization','none','Name','observation')
    fullyConnectedLayer(actorLayerSizes(1), 'Name', 'ActorFC1')
    reluLayer('Name', 'ActorRelu1')
    fullyConnectedLayer(actorLayerSizes(2), 'Name', 'ActorFC2')
    reluLayer('Name', 'ActorRelu2')
    fullyConnectedLayer(numAct, 'Name', 'ActorFC3')                       
    tanhLayer('Name','ActorTanh1'), ...
    scalingLayer('Scale',sc, 'Bias',bias)
    ];

I'm getting the error below:

Error using vertcat

Dimensions of arrays being concatenated are not consistent.

Can anyone help me with this?

Thanks

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Mostafa Nazmi 2021-2-10

I'm using DDPG agent for this problem

Mostafa Nazmi 2021-2-13

@Emmanouil Tzorakoleftherakis Any ideas how to fix this my friend?

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Answer 1

Emmanouil Tzorakoleftherakis 2021-2-13

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/731438-problem-using-scalinglayer-for-shifting-actor-outputs-to-desired-range#answer_622682

If you remove ',...' from the 'tanh' row the error goes away. The way you have it now, you are adding the scaling layer in the same row as tanh whereas it should be in its own row.

actorNetwork = [
    imageInputLayer([numObs 1 1],'Normalization','none','Name','observation')
    fullyConnectedLayer(actorLayerSizes(1), 'Name', 'ActorFC1')
    reluLayer('Name', 'ActorRelu1')
    fullyConnectedLayer(actorLayerSizes(2), 'Name', 'ActorFC2')
    reluLayer('Name', 'ActorRelu2')
    fullyConnectedLayer(numAct, 'Name', 'ActorFC3')                       
    tanhLayer('Name','ActorTanh1')
    scalingLayer('Scale',sc, 'Bias',bias)
    ];