def createNextGeneration(self, generation):
if generation == None:
nextGeneration = Generation(0)
while nextGeneration.getSize() < self.noOfChromosomesPerGeneration:
chromosome = Chromosome(nextGeneration.getNo(),
nextGeneration.getSize())
chromosome.seed()
nextGeneration.addChromosome(chromosome)
else:
generation.sortAccordingToFitness()
nextGeneration = Generation(generation.getNo() + 1)
while nextGeneration.getSize() < self.noOfChromosomesPerGeneration:
i1 = int(math.fabs(math.ceil(random.gauss(0, 0.1) * 199)))
parent1 = generation.getChromosomeAt(i1)
i2 = i1
while i2 == i1:
i2 = int(math.fabs(math.ceil(random.gauss(0, 0.1) * 199)))
parent2 = generation.getChromosomeAt(i2)
children = parent1.mate(nextGeneration.getNo(),
nextGeneration.getSize(), parent2)
for child in children:
child.mutate()
nextGeneration.addChromosome(child)
return nextGeneration
