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Push — master ( 5ae9b3...798a76 )
by Simon
01:59
created

RepulsingHillClimbingOptimizer.evaluate()   A

Complexity

Conditions 2

Size

Total Lines 7
Code Lines 5

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
cc 2
eloc 5
nop 2
dl 0
loc 7
rs 10
c 0
b 0
f 0
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# Author: Simon Blanke
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# Email: [email protected]
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# License: MIT License
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from . import HillClimbingOptimizer
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from ...search import Search
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class RepulsingHillClimbingOptimizer(HillClimbingOptimizer, Search):
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    def __init__(
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        self,
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        search_space,
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        epsilon=0.03,
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        distribution="normal",
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        n_neighbours=3,
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        repulsion_factor=5,
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        rand_rest_p=0.03,
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    ):
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        super().__init__(search_space, epsilon, distribution, n_neighbours)
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        self.tabus = []
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        self.repulsion_factor = repulsion_factor
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        self.rand_rest_p = rand_rest_p
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        self.epsilon_mod = 1
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    @HillClimbingOptimizer.track_nth_iter
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    @HillClimbingOptimizer.random_restart
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    def iterate(self):
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        return self._move_climb(self.pos_current, epsilon_mod=self.epsilon_mod)
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    def evaluate(self, score_new):
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        super().evaluate(score_new)
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        if score_new <= self.score_current:
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            self.epsilon_mod = self.repulsion_factor
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        else:
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            self.epsilon_mod = 1
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