You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
28 lines
798 B
Python
28 lines
798 B
Python
import numpy as np
|
|
|
|
|
|
def run_mlp(obs, weights, activation_function="tanh"):
|
|
'''
|
|
Run multilayer perceptron using numpy
|
|
|
|
Parameters
|
|
----------
|
|
obs : ndarray
|
|
float32 array with neural network inputs
|
|
weights : list
|
|
list of MLP layers of type (bias, kernel)
|
|
activation_function : str
|
|
activation function for hidden layers
|
|
set to "none" to disable
|
|
'''
|
|
|
|
obs = obs.astype(np.float32, copy=False)
|
|
out = obs
|
|
|
|
for w in weights[:-1]: # for each hidden layer
|
|
out = np.matmul(w[1],out) + w[0]
|
|
if activation_function == "tanh":
|
|
np.tanh(out, out=out)
|
|
elif activation_function != "none":
|
|
raise NotImplementedError
|
|
return np.matmul(weights[-1][1],out) + weights[-1][0] # final layer |