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This commit is contained in:
SimpleArt
2020-11-20 19:06:55 -05:00
parent 68b10c3fde
commit 73461f7915
10 changed files with 159 additions and 52 deletions
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12
src/parent_selection/parent_selection_methods.py
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@ -1,6 +1,10 @@
import random
def check_selection_probability(selection_method):
"""Raises an exception if the selection_probability
is not between 0 and 1. Otherwise runs the selection
method.
"""
def helper(ga):
if 0 < ga.selection_probability < 1:
selection_method(ga)
@ -10,6 +14,10 @@ def check_selection_probability(selection_method):
def check_positive_fitness(selection_method):
"""Raises an exception if the population contains a
chromosome with negative fitness. Otherwise runs
the selection method.
"""
def helper(ga):
if ga.get_chromosome_fitness(0) > 0 and ga.get_chromosome_fitness(-1) >= 0:
selection_method(ga)
@ -19,6 +27,9 @@ def check_positive_fitness(selection_method):
def ensure_sorted(selection_method):
"""Sorts the population by fitness
and then runs the selection method.
"""
def helper(ga):
ga.population.sort_by_best_fitness(ga)
selection_method(ga)
@ -27,6 +38,7 @@ def ensure_sorted(selection_method):
class Parent_Selection:
# Private method decorators, see above.
def __check_selection_probability(selection_method):
return check_selection_probability(selection_method)
def __check_positive_fitness(selection_method):