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Population.next_population and better comments

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SimpleArt
2020-10-15 00:22:58 -04:00
parent 543b295e52
commit 5df19df643
6 changed files with 160 additions and 59 deletions
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41
src/survivor_selection/survivor_selection_methods.py
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@ -3,25 +3,42 @@ import random
class Survivor_Selection:
"""Survivor selection determines which individuals should be brought to the next generation"""
def fill_in_best(ga, next_population):
def fill_in_best(ga):
"""Fills in the next population with the best chromosomes from the last population"""
ga.population.set_chromosome_list(ga.population.get_chromosome_list()[:ga.population.size()-next_population.size()] + next_population.get_chromosome_list())
# add in chromosomes starting from
# the first chromosome in the population
# until the next population is full
ga.population.append_children(
ga.population.get_chromosome_list()[:ga.population.size()-len(ga.population.next_population)]
)
def fill_in_random(ga, next_population):
def fill_in_random(ga):
"""Fills in the next population with random chromosomes from the last population"""
ga.population.set_chromosome_list([
random.choice(ga.population.get_chromosome_list())
for n in range(ga.population.size()-next_population.size())]
+ next_population.get_chromosome_list())
ga.population.append_children([ # add in chromosomes
random.choice( # randomly
ga.population.get_chromosome_list() # from the population
) # until the next population is full
for n in range(ga.population.size()-ga.population.total_children())])
def fill_in_parents_then_random(ga, next_population):
def fill_in_parents_then_random(ga):
"""Fills in the next population with all parents followed by random chromosomes from the last population"""
ga.population.set_chromosome_list([
random.choice(ga.population.get_chromosome_list())
for n in range(ga.population.size()-len(ga.population.get_mating_pool())-next_population.size())]
+ ga.population.get_mating_pool() + next_population.get_chromosome_list())
ga.population.append_children([ # add in chromosomes
random.choice( # randomly
ga.population.get_chromosome_list() # from the population
) # until the next population is full
for n in range(ga.population.size()-ga.population.total_children())])
ga.population.append_children( # add in chromosomes
ga.population.get_mating_pool() # from the mating pool
) #
ga.population.append_children([ # add in chromosomes
random.choice( # randomly
ga.population.get_chromosome_list() # from the population
) # until the next population is full
for n in range(ga.population.size()-ga.population.total_children())])