alternate the activation function

[minhdc]

I am customizing my hopfield network based on your implementation, are there any possibilities to alternate your default activation function of this Hopfield network ?

I found that you wrote your activation function in library.py which is:

def sign_0(array):  # x=0 -> sign_0(x) = 1
    return np.where(array >= -1e-15, 1, -1)  # machine precision: null festhalten

I would like to change it into arctan(). Thanks!