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pyroFAE2.py
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pyroFAE2.py
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import os
import numpy as np
import merge_sort
from solution import Solution
import constants as Cnsts
class pyroFAE2:
def __init__(self) -> None:
os.system("rm ./data/robot/robot_fitness*.txt")
os.system("rm ./data/robot/brain*.nndf")
os.system("rm ./data/robot/body*.urdf")
self.parents = {}
self.next_available_id = 0
self.generation_size = Cnsts.generation_size
self.number_of_children = Cnsts.number_of_children
self.family_filter_size = Cnsts.family_filter_size
self.random_members = Cnsts.random_members
self.total_filter_size = self.generation_size - self.random_members
for parent_num in range(Cnsts.generation_size):
parent_id = "000" + f"{parent_num:03}" + f"{parent_num:03}" + "000"
self.parents[parent_id] = Solution(solution_id=parent_id)
self.next_available_id += 1
self.genome_shape = self.parents["000000000000"].network_shape
def evolve(self) -> None:
self.evaluate(self.parents)
for generation in range(Cnsts.num_generations):
os.system("rm ./data/robot/robot_fitness*.txt")
os.system("rm ./data/robot/brain*.nndf")
os.system("rm ./data/robot/body*.urdf")
self.evolve_for_one_generation(generation)
self.show_best()
def evaluate(self, solutions) -> None:
for key in solutions:
solution = solutions[key]
solution.start_simulation()
for key in solutions:
solution = solutions[key]
solution.wait_for_simulation_to_end()
def evolve_for_one_generation(self, generation):
self.produce_children(generation)
self.mutate()
self.evaluate(self.children)
self.print()
self.select(generation)
def produce_children(self, generation):
self.children = {}
for parent1 in self.parents:
for parent2 in self.parents:
for child_num in range(self.number_of_children):
percent_parent1 = np.random.rand(*self.genome_shape)
percent_parent2 = 1 - percent_parent1
parent1_genome = self.parents[parent1].weights
parent2_genome = self.parents[parent2].weights
child_id = f"{generation+1:03}" + parent1[3:6] + parent2[3:6] + f"{child_num:03}"
child_genome = np.multiply(percent_parent1, parent1_genome) + np.multiply(percent_parent2, parent2_genome)
self.children[child_id] = Solution(child_id, child_genome)
def mutate(self) -> None:
for child_key in self.children:
child = self.children[child_key]
child.mutate()
def print(self) -> None:
parent_fitnesses = []
for key in self.parents:
parent_fitnesses.append(self.parents[key].fitness)
child_fitnesses = []
for key in self.children:
child_fitnesses.append(self.children[key].fitness)
print("\np max: {} \t\t c max: {}".format(np.max(parent_fitnesses), np.max(child_fitnesses)))
print("p mean: {} \t\t c mean: {}\n".format(np.mean(parent_fitnesses), np.mean(child_fitnesses)))
def select(self, generation) -> None:
individuals = self.children | self.parents
sorted_individual_indices = self.sort_individuals(individuals)
next_generation = {}
family_counts = {}
while len(next_generation) < self.total_filter_size:
top_individual_index = sorted_individual_indices[0]
top_individual = individuals[top_individual_index]
top_individual_family1 = top_individual_index[3:6]
top_individual_family2 = top_individual_index[6:9]
if top_individual_family1 not in family_counts:
family_counts[top_individual_family1] = 0
if top_individual_family2 not in family_counts:
family_counts[top_individual_family2] = 0
if family_counts[top_individual_family1] > self.family_filter_size or family_counts[top_individual_family2] > self.family_filter_size:
sorted_individual_indices.remove(top_individual_index)
else:
family_counts[top_individual_family1] += 1
family_counts[top_individual_family2] += 1
next_generation[top_individual_index] = top_individual
sorted_individual_indices.remove(top_individual_index)
new_members = {}
for random_member_index in range(self.random_members):
new_individual_key = self.generation_size + (generation * self.random_members) + random_member_index
new_id = f"{generation:03}" + f"{new_individual_key:03}" + f"{new_individual_key:03}" + f"{random_member_index:03}"
new_members[new_id] = Solution(solution_id=new_id)
self.evaluate(new_members)
self.parents = next_generation | new_members
def show_best(self) -> None:
top_key = list(self.parents.keys())[0]
for key in self.parents:
parent = self.parents[key]
current_best = self.parents[top_key]
if parent.fitness > current_best.fitness:
top_key = key
print(self.parents[top_key].fitness)
self.parents[top_key].start_simulation("GUI")
def sort_individuals(self, individuals):
individual_fitness_dict = {}
for individual in individuals:
individual_fitness_dict[individual] = individuals[individual].fitness
return merge_sort.merge_sort(individual_fitness_dict)