Hard limiting / threshold activation function in TensorFlow

Question

I\'m trying to implement a basic, binary Hopfield Network in TensorFlow 0.9. Unfortunately I\'m having a very hard time getting the activation function working. I\'m looking

Answer 1

Just for the record, one can get the sign function via tf.sign. It outputs a float or integer (depending on the input) indicating the sign with -1 or 1. However, note that tf.sign(0) == 0!

For a hard limiting activation function, binary threshold activation function, Heaviside step function, see the other answer.