tf.keras.backend.foldl( fn, elems, initializer=None, name=None )
Reduce elems using fn to combine them from left to right.
fn: Callable that will be called upon each element in elems and an accumulator, for instance
lambda acc, x: acc + x
initializer: The first value used (
elemsin case of None)
name: A string name for the foldl node in the graph
Tensor with same type and shape as