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Last change
on this file since 1167 was
1147,
checked in by Maciej Komosinski, 3 years ago
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Multi-criteria optimization, can optionally include diversity is one criterion
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File size:
824 bytes
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| 1 | from deap import tools |
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| 2 | |
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| 3 | from evolalg.statistics.statistics import Statistics |
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| 4 | |
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| 5 | |
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| 6 | class MultiStatistics(Statistics): |
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| 7 | def __init__(self, stats, verbose=True, *args, **kwargs): |
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| 8 | super(MultiStatistics, self).__init__(*args, **kwargs) |
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| 9 | self._org_stats = stats |
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| 10 | self.stats = tools.MultiStatistics(**stats) |
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| 11 | self.logbook = tools.Logbook() |
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| 12 | self.logbook.header = ['gen'] + (self.stats.fields if self.stats else []) |
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| 13 | self.verbose = verbose |
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| 14 | self.gen = 0 |
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| 15 | |
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| 16 | def init(self): |
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| 17 | for v in self._org_stats.values(): |
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| 18 | v.init() |
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| 19 | self.gen = 0 |
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| 20 | |
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| 21 | def collect(self, population): |
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| 22 | record = self.stats.compile(population) |
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| 23 | self.logbook.record(gen=self.gen, **record) |
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| 24 | self.gen += 1 |
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| 25 | if self.verbose: |
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| 26 | print(self.logbook.stream) |
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