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For questions related to the concept of loss (or cost) function in the context of machine learning.

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Which loss / activation function with 2 classes that do not occur often and do not sum to one?

I have a neural network that predicts 2 classes of a time series (bottom and top). Currenlty my Y labels are size 2: [1 0] for bottom and [0 1] for top. The NN has 2 output nodes. Of course not every …
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