title: Keras - epoch dependant loss function
body: <p>I'm working with the Keras framework and I would like to implement an epoch dependent loss function (i.e the loss function isn't the same at each epoch)</p>
  
  <p>How would you do that ? Can you add an example, for instance based on <a href="https://github.com/fchollet/keras/blob/master/examples/variational_autoencoder.py" rel="nofollow noreferrer">the keras VAE tutorial ?</a></p>
  
  <p>Thank you for your help</p>