def initializePopulation(self):
'''Fully random population initialization'''
for i in range(
int(self.population_size *
(1 - self.constructiveHeuristic_percent))):
individual = Individual()
for j in range(self.dna_size):
gene = randint(0, 1)
individual.dna.append(gene)
self.individuals.append(individual)
'''Heuristic population initialization'''
for i in range(
int(self.population_size *
self.constructiveHeuristic_percent)):
individual = Individual()
individual.dna = self.constructiveHeuristic()
self.individuals.append(individual)
def mutate(seed: Individual):
y = [None] * len(seed.dna)
# loop through and mutate randomly
for idx, x in enumerate(seed.dna):
r = random.random()
if r < .02:
from layertype import LayerType
y[idx] = LayerType.random_layer()
elif r < .05:
y[idx] = x[0], random.randrange(10, 1000)
else:
y[idx] = x
# randomly shorten or lengthen dna
r = random.random()
if r < .02:
from layertype import LayerType
y.append(LayerType.random_layer())
elif r < .04:
del y[-1]
seed.dna = y
return seed
