Selects <code>x</code> in train phase, and <code>alt</code> otherwise.
alt should have the same shape as
k_in_train_phase(x, alt, training = NULL)
What to return in train phase (tensor or function that returns a tensor).
What to return otherwise (tensor or function that returns a tensor).
Optional scalar tensor (or R logical or integer) specifying the learning phase.
alt based on the
training flag. the
flag defaults to
This function is part of a set of Keras backend functions that enable lower level access to the core operations of the backend tensor engine (e.g. TensorFlow, CNTK, Theano, etc.).
You can see a list of all available backend functions here: https://keras.rstudio.com/articles/backend.html#backend-functions.