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Fixed scope of function decorators

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This commit is contained in:
SimpleArt
2020-11-19 22:28:04 -05:00
parent 46b4dc749d
commit 3d10adb2d9
4 changed files with 85 additions and 81 deletions
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65
src/parent_selection/parent_selection_methods.py
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@ -1,36 +1,37 @@
import random
class Parent_Selection:
def __check_selection_probability(selection_method):
def helper(ga):
if 0 < ga.selection_probability < 1:
selection_method(ga)
else:
raise Exception("Selection probability must be greater than 0 to select parents.")
return helper
def __check_positive_fitness(selection_method):
def helper(ga):
if ga.get_chromosome_fitness(0) == 0 or ga.get_chromosome_fitness(-1) < 0:
raise Exception("Converted fitness values must be all positive. Consider using rank selection instead.")
else:
selection_method(ga)
return helper
def __ensure_sorted(selection_method):
def helper(ga):
ga.population.sort_by_best_fitness(ga)
def check_selection_probability(selection_method):
def helper(ga):
if 0 < ga.selection_probability < 1:
selection_method(ga)
return helper
else:
raise Exception("Selection probability must be greater than 0 to select parents.")
return helper
def check_positive_fitness(selection_method):
def helper(ga):
if ga.get_chromosome_fitness(0) == 0 or ga.get_chromosome_fitness(-1) < 0:
raise Exception("Converted fitness values must be all positive. Consider using rank selection instead.")
else:
selection_method(ga)
return helper
def ensure_sorted(selection_method):
def helper(ga):
ga.population.sort_by_best_fitness(ga)
selection_method(ga)
return helper
class Parent_Selection:
class Rank:
@Parent_Selection._Parent_Selection__check_selection_probability
@Parent_Selection._Parent_Selection__ensure_sorted
@check_selection_probability
@ensure_sorted
def tournament(ga):
"""
Will make tournaments of size tournament_size and choose the winner (best fitness)
@ -68,9 +69,9 @@ class Parent_Selection:
class Fitness:
@Parent_Selection._Parent_Selection__check_selection_probability
@Parent_Selection._Parent_Selection__check_positive_fitness
@Parent_Selection._Parent_Selection__ensure_sorted
@check_selection_probability
@check_positive_fitness
@ensure_sorted
def roulette(ga):
"""Roulette selection works based off of how strong the fitness is of the
chromosomes in the population. The stronger the fitness the higher the probability
@ -105,9 +106,9 @@ class Parent_Selection:
break
@Parent_Selection._Parent_Selection__check_selection_probability
@Parent_Selection._Parent_Selection__check_positive_fitness
@Parent_Selection._Parent_Selection__ensure_sorted
@check_selection_probability
@check_positive_fitness
@ensure_sorted
def stochastic(ga):
"""Stochastic roulette selection works based off of how strong the fitness is of the
chromosomes in the population. The stronger the fitness the higher the probability