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innovation.py
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innovation.py
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import pprint
pp = pprint.PrettyPrinter(indent=4, width=120, depth=3)
class InnovationType:
NEURON, LINK = range(2)
class Innovation:
def __init__(self, innovation_id, innovation_type, in_neuron_id=None, out_neuron_id=None, neuron_id=None, link_id=None):
self.id = innovation_id
self.type = innovation_type # new neuron or new link
self.in_neuron_id = in_neuron_id
self.out_neuron_id = out_neuron_id
self.neuron_id = neuron_id
self.link_id = link_id
#self.hidden = False # ???
class InnovationDB:
def __init__(self): # do we need number of input output neurons here?? Substrat?
self.innovations = []
self.next_innovation_id = 0 # innovation_id and innovation_idx are the same
self.next_neuron_id = 0
self.next_link_id = 0
def exist_innovation(self, innovation_type, in_neuron_id, out_neuron_id):
# returns innovation if exist or None if not
for innovation in self.innovations:
if innovation.type == innovation_type and innovation.in_neuron_id == in_neuron_id and innovation.out_neuron_id == out_neuron_id:
return innovation
return None
def create_innovation(self, innovation_type, in_neuron_id=None, out_neuron_id=None):
if in_neuron_id == None or out_neuron_id == None:
return None
if innovation_type == InnovationType.NEURON:
innovation = Innovation(self.next_innovation_id, innovation_type, in_neuron_id, out_neuron_id, neuron_id=self.next_neuron_id)
self.next_neuron_id += 1
elif innovation_type == InnovationType.LINK:
innovation = Innovation(self.next_innovation_id, innovation_type, in_neuron_id, out_neuron_id, link_id=self.next_link_id)
self.next_link_id += 1
else:
return None
self.innovations.append(innovation)
self.next_innovation_id += 1
return innovation
def get_innovation(self, innovation_type, in_neuron_id=None, out_neuron_id=None):
# creates innovation if not exist
innovation = self.exist_innovation(innovation_type, in_neuron_id, out_neuron_id)
if innovation == None:
innovation = self.create_innovation(innovation_type, in_neuron_id, out_neuron_id)
return innovation