Esempio n. 1
0
    def crossover(self, mother, father):
        """ Do crossover onece. """
        child1 = REntity(self.mutation_rate,
                         self.mutation_parameter,
                         self.settings,
                         self.employees,
                         self.sdate,
                         self.length,
                         mother.gene)
        child2 = REntity(self.mutation_rate,
                         self.mutation_parameter,
                         self.settings,
                         self.employees,
                         self.sdate,
                         self.length,
                         father.gene)
        if not flip(self.crossover_rate):
            return ()
        for i in range(self.length):
            if flip(self.crossover_parameter):
                mother, father = father, mother
            for (md, fd, c1d, c2d) in zip(mother.gene.works_at(i),
                                          father.gene.works_at(i),
                                          child1.gene.works_at(i),
                                          child2.gene.works_at(i)):
                c1d.work = md.work
                c1d.locked = md.locked

                c2d.work = fd.work
                c2d.locked = fd.locked
        return (child1, child2)
Esempio n. 2
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 def mutation(self):
     """
     突然変異として、固定されていなシフトが二つ以上あった場合これを交換する
     """
     if not flip(self.mutation_rate):
         return
     for works in self.gene.works_on_days:
         unlocked_positions = [i for i, d in enumerate(works) if
                               not d.locked]
         if len(unlocked_positions) > 1 and flip(self.mutation_parameter):
             a = choice(unlocked_positions)
             b = self.assignable_index(works, a)
             if b == -1:
                 continue
             works[a].work, works[b].work = works[b].work, works[a].work
Esempio n. 3
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 def test_flip(self):
     res = []
     for i in range(100):
         res.append(flip(0.1))
     l = len([x for x in res if x])
     self.assertTrue(l < 15)
     for i in range(100):
         self.assertTrue(5 <= rand(10, 5) < 10)