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Better random avoid best

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SimpleArt
2020-12-09 10:55:33 -05:00
parent a404eba685
commit dcf14b945f
1 changed files with 5 additions and 3 deletions
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8
src/mutation/mutation_methods.py
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@ -102,11 +102,13 @@ class Mutation_Methods:
@_check_chromosome_mutation_rate
@_loop_random_selections
def random_avoid_best(ga, index):
def random_avoid_best(ga):
"""Selects random chromosomes while avoiding the best chromosomes. (Elitism)"""
if index > ga.percent_converged*len(ga.population)*3/16:
sample_space = range(ceil(ga.percent_converged*len(ga.population)*3/16), len(ga.population))
sample_size = ceil(ga.chromosome_mutation_rate*len(ga.population))
for index in random.sample(sample_space, sample_size):
ga.mutation_individual_impl(ga, ga.population[index])