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Added function decorator

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SimpleArt
2020-11-19 21:55:12 -05:00
parent a8b38dc800
commit 46b4dc749d
1 changed files with 25 additions and 22 deletions
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47
src/crossover/crossover_methods.py
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@ -5,39 +5,42 @@ class Crossover_Methods:
class Population:
"""Methods for selecting chromosomes to crossover."""
def sequential_selection(ga):
def __append_children_from_mating_pool(crossover_method):
def helper(ga):
mating_pool = ga.population.mating_pool
ga.population.append_children([
[chromosome for cromosome in crossover_method(ga, mating_pool)]
)
return helper
@__append_children_from_mating_pool
def sequential_selection(ga, mating_pool):
"""Select sequential pairs from the mating pool.
Every parent is paired with the previous parent.
The first parent is paired with the last parent.
"""
mating_pool = ga.population.get_mating_pool()
for index in range(len(mating_pool)): # for each parent in the mating pool
ga.population.add_child( # add a child
ga.crossover_individual_impl( # by crossing
ga, #
mating_pool[index], # the parent and
mating_pool[index-1] # the previous parent
)
)
for index in range(len(mating_pool)): # for each parent in the mating pool
yield ga.crossover_individual_impl( # apply crossover to
ga, #
mating_pool[index], # the parent and
mating_pool[index-1] # the previous parent
)
def random_selection(ga):
@__append_children_from_mating_pool
def random_selection(ga, mating_pool):
"""Select random pairs from the mating pool.
Every parent is paired with a random parent.
"""
mating_pool = ga.population.get_mating_pool()
for parent in mating_pool: # for each parent in the mating pool
ga.population.add_child( # add a child
ga.crossover_individual_impl( # by crossing
ga, #
parent, # the parent and
random.choice(mating_pool) # a random parent
)
)
for parent in mating_pool: # for each parent in the mating pool
yield ga.crossover_individual_impl( # apply crossover to
ga, #
parent, # the parent and
random.choice(mating_pool) # a random parent
)
class Individual: