The sum of incoming signals gets too big causing an overflow. The node.sum was -160.064 when the overflow below occurred.
The values of the observations are (-inf, inf), probably need to squash them.
math range error
File "/home/seal/walker/neat/node.py", line 43, in sigmoid
return 1 / (1 + exp(-4.9*self.sum)) # Coefficient from original NEAT src.
File "/home/seal/walker/neat/node.py", line 21, in activate
self.output = self.sigmoid()
File "/home/seal/walker/neat/network.py", line 45, in activate
node.activate()
File "/home/seal/walker/experiments/cheetah.py", line 23, in evaluate
action = network.activate(observation, stabilize=False)
File "/home/seal/walker/neat/genetic_algorithm.py", line 17, in run
fitness, done = self.environment.evaluate(genome)
File "/home/seal/walker/experiments/cheetah.py", line 33, in <module>
ga.run()
seallard
commented
3 years ago
The sum of incoming signals gets too big causing an overflow. The node.sum was -160.064 when the overflow below occurred. The values of the observations are (-inf, inf), probably need to squash them.