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Last change
on this file since 1190 was
1190,
checked in by Maciej Komosinski, 17 months ago
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Added the "evolalg" module for evolutionary optimization
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File size:
592 bytes
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| 1 | import numpy as np |
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| 2 | |
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| 3 | |
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| 4 | class RandomIndexSequence: |
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| 5 | """A helper function for tournament selection. Allows each individual to take part in a tournament, |
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| 6 | thus reducing the risk of overlooking individuals by not sampling them due to uncontrolled |
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| 7 | randomness, as can happen in the naive implementation of tournament selection.""" |
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| 8 | |
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| 9 | def __init__(self, popsize): |
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| 10 | self.popsize: int = popsize |
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| 11 | self.permut: list = [] |
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| 12 | |
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| 13 | def getNext(self): |
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| 14 | if len(self.permut) < 1: |
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| 15 | self.permut = list(np.random.permutation(self.popsize)) |
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| 16 | return self.permut.pop() |
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