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Added gene mutation rate

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This commit is contained in:
SimpleArt
2020-10-27 17:32:40 -04:00
parent 0b5f42966c
commit 00af4dbbe7
3 changed files with 39 additions and 24 deletions
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43
src/mutation/mutation_methods.py
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@ -7,13 +7,18 @@ class Mutation_Methods:
def random_selection(ga):
"""Selects random chromosomes"""
mutation_count = 0
# Loop through the population
for index in range(ga.population.size()):
# Loop until enough mutations occur
while mutation_count < ga.population.size()*ga.chromosome_mutation_rate:
# Randomly apply mutations
if random.uniform(0, 1) < ga.mutation_rate:
ga.population.set_chromosome(ga.mutation_individual_impl(ga, ga.population.get_chromosome(index)), index)
# Loop through the population
for index in range(ga.population.size()):
# Randomly apply mutations
if random.uniform(0, 1) < ga.chromosome_mutation_rate:
mutation_count += 1
ga.population.set_chromosome(ga.mutation_individual_impl(ga, ga.population.get_chromosome(index)), index)
class Individual:
@ -43,19 +48,25 @@ class Mutation_Methods:
def single_gene(ga, chromosome):
"""Mutates a random gene in the chromosome and resets the fitness."""
chromosome.set_fitness(None)
mutation_count = 0
# Using the chromosome_impl
if ga.chromosome_impl != None:
index = random.randint(0, chromosome.size()-1)
chromosome.set_gene(ga.make_gene(ga.chromosome_impl()[index]), index)
# Loops until enough mutations occur
while mutation_count < chromosome.size()*ga.gene_mutation_rate:
mutation_count += 1
# Using the gene_impl
elif ga.gene_impl != None:
index = random.randint(0, chromosome.size()-1)
chromosome.set_gene(ga.make_gene(ga.gene_impl()), index)
# Using the chromosome_impl
if ga.chromosome_impl != None:
index = random.randint(0, chromosome.size()-1)
chromosome.set_gene(ga.make_gene(ga.chromosome_impl()[index]), index)
# Exit because no gene creation method specified
else:
print("You did not specify any initialization constraints.")
# Using the gene_impl
elif ga.gene_impl != None:
index = random.randint(0, chromosome.size()-1)
chromosome.set_gene(ga.make_gene(ga.gene_impl()), index)
# Exit because no gene creation method specified
else:
print("You did not specify any initialization constraints.")
break
return chromosome