INNER CODE UNIT · Python

_mutate

joeddav/devol · devol/devol.py:250

    def _mutate(self, genome, generation):
        # increase mutations as program continues
        num_mutations = max(3, generation // 4)
        return self.genome_handler.mutate(genome, num_mutations)


class _Population(object):

    def __len__(self):
        return len(self.members)

    def __init__(self, members, fitnesses, score, obj='max'):
        self.members = members
        scores = fitnesses - fitnesses.min()
        if scores.max() > 0:
            scores /= scores.max()
        if obj == 'min':
            scores = 1 - scores

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