76 lines
2.2 KiB
Python
76 lines
2.2 KiB
Python
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from individual_interface import *
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from random import *
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from math import *
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CHIFFRE = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9"]
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class Combinaison(Individual_Interface):
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def copy(self):
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'''
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build a copy of self, the genome is a copy of self's genome
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:return: a new Individual which is a "clone" of self
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:rtype: an Individual object
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'''
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copy = Combinaison(self.get_size())
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copy.set_value(self.get_value())
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return copy
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def init_value(self):
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'''
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randomly initialize the genome value of self
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'''
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return [choice(CHIFFRE) for _ in range (self.get_size())]
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def cross_with(self, other):
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'''
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perform a 1 point crossover between self and other, two new built individuals are returned
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:param other: the individual to cross with
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:type other: an Individual object
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:return: the two new Individuals built by 1 point crossover operation
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:rtype: 2-uple of individuals
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'''
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value = self.get_value()
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other_value = other.get_value()
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pivot = randint (0, self.get_size())
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test_1, test_2 = Combinaison(self.get_size()), Combinaison(self.get_size())
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test_1.set_value(value[:pivot] + other_value[pivot:])
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test_2.set_value(other_value[:pivot] + value[pivot:])
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return (test_1, test_2)
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def mutate(self, probability):
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'''
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apply mutation operation to self : each element of the genome sequence is randomly changed with given probabiliy
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side effect : self's genome is modified
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:param probability: the probability of mutation for every gene
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:type probability: float
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:UC: probability in [0,1[
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'''
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for gene in range(len(self.get_value())):
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proba = uniform(0, 1)
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if proba < probability :
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self.mutate_gene(gene)
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def mutate_gene(self, gene):
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temp = self.get_value()
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self.set_value(temp[:gene] + [choice(CHIFFRE)] + temp [gene+1:])
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