Hey friends! Has anyone written any code before where they freeze particular parameters in a layer of a NN?

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I don’t mean freezing particular layers of a NN, which I can successfully do (e.g.:

for param in resnet18.fc.parameters():
    param.requires_grad = True

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What I mean is freezing particular parameters within a layer - by applying some sort of mask or otherwise.

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Thanks so much! :)