def __init__(self,
action_size,
layer_fn,
activation_fn=nn.ReLU,
squashing_fn=nn.Tanh,
bias=False):
super().__init__()
activation_fn = MODULES.get_if_str(activation_fn)
self.action_size = action_size
self.coupling1 = CouplingLayer(action_size=action_size,
layer_fn=layer_fn,
activation_fn=activation_fn,
bias=bias,
parity="odd")
self.coupling2 = CouplingLayer(action_size=action_size,
layer_fn=layer_fn,
activation_fn=activation_fn,
bias=bias,
parity="even")
self.squashing_layer = SquashingLayer(squashing_fn)
def __init__(self, squashing_fn=nn.Tanh):
super().__init__()
self.squashing_layer = SquashingLayer(squashing_fn)