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According to: https://stackoverflow.com/questions/65307833/why-is-the-decoder-in-an-autoencoder-uses-a-sigmoid-on-the-last-layer

  • The last layer activation function contains sigmoid in order to the output to be in range [0, 1].
  • If the input to the autoencoder is normalized (each pixel between [0..1]), Can we change the activation function of the last layer from sigmoid to be something else ?
  • Can we use no activation function at all ?
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