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40 lines
1.4 KiB
Python
40 lines
1.4 KiB
Python
import numpy as np
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from skopt.space import Integer
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class SKDecimal(Integer):
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def __init__(self, low, high, decimals=3, prior="uniform", base=10, transform=None,
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name=None, dtype=np.int64):
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self.decimals = decimals
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self.pow_dot_one = pow(0.1, self.decimals)
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self.pow_ten = pow(10, self.decimals)
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_low = int(low * self.pow_ten)
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_high = int(high * self.pow_ten)
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# trunc to precision to avoid points out of space
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self.low_orig = round(_low * self.pow_dot_one, self.decimals)
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self.high_orig = round(_high * self.pow_dot_one, self.decimals)
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super().__init__(_low, _high, prior, base, transform, name, dtype)
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def __repr__(self):
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return (
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f"Decimal(low={self.low_orig}, high={self.high_orig}, decimals={self.decimals}, "
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f"prior='{self.prior}', transform='{self.transform_}')"
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)
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def __contains__(self, point):
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if isinstance(point, list):
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point = np.array(point)
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return self.low_orig <= point <= self.high_orig
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def transform(self, Xt):
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return super().transform([int(v * self.pow_ten) for v in Xt])
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def inverse_transform(self, Xt):
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res = super().inverse_transform(Xt)
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# equivalent to [round(x * pow(0.1, self.decimals), self.decimals) for x in res]
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return [int(v) / self.pow_ten for v in res]
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