Using Weighted Classes in CNN

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Darrien Walters
Darrien Walters 2021-3-14
评论： Darrien Walters 2021-3-21
In trying to set up my CNN layers with weighted classes I am getting an error that states:
"Error using classificationLayer>iParseInputArguments (line 58)
'ClassWeights' is not a recognized parameter. For a list of valid name-value pair arguments, see the
documentation for this function."
I am unsure if I'm using the class weights incorrectly. The following are the layers of my network:
classes = ["0","1"];
classWeights = 1./countcats(train_output);
classWeights = classWeights'/mean(classWeights);
layers = [
imageInputLayer([480 1 1])
convolution2dLayer([102 1],3,'Stride',1)
batchNormalizationLayer
leakyReluLayer
maxPooling2dLayer(2,'Stride',2,'Padding',[0 0 0 1])
convolution2dLayer([24 1],10,'Stride',1)
batchNormalizationLayer
leakyReluLayer
maxPooling2dLayer(2,'Stride',2,'Padding',[0 0 0 1])
convolution2dLayer([11 1],10,'Stride',1)
batchNormalizationLayer
leakyReluLayer
maxPooling2dLayer(2,'Stride',2,'Padding',[0 0 0 1])
convolution2dLayer([9 1],10,'Stride',1)
batchNormalizationLayer
leakyReluLayer
maxPooling2dLayer(2,'Stride',2,'Padding',[0 0 0 1])
fullyConnectedLayer(30)
fullyConnectedLayer(10)
fullyConnectedLayer(2)
softmaxLayer
classificationLayer('Classes',classes,'ClassWeights',classWeights)];
This error occurs with and without classes present in the brackets.
  1 个评论
Darrien Walters
Darrien Walters 2021-3-14
For further clarification i dont believe my layers are the real issue as i have run it before without the weighted classes and got no issue it occurs when i try to add class weights to the classification layer and i am unsure why if i am using the function wrong

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采纳的回答

Rishik Ramena
Rishik Ramena 2021-3-21
The 'ClassWeights' property for the classificationLayer has been introduced in MATLAB R2021a. So if you are running a version prior to this, you are supposed to get this error. Please find the documentation for your installed MATLAB version here.

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