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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 StatisticsDeap(Statistics): |
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| 7 | def __init__(self, stats, extract_fn=lambda ind: ind.fitness, verbose=True): |
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| 8 | self.stats = tools.Statistics(extract_fn) |
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| 9 | for name, fn in stats: |
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| 10 | self.stats.register(name, fn) |
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| 11 | |
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| 12 | self.logbook = tools.Logbook() |
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| 13 | self.logbook.header = ['gen'] + (self.stats.fields if self.stats else []) |
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| 14 | |
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| 15 | self.gen = 0 |
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| 16 | self.verbose = verbose |
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| 17 | |
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| 18 | def init(self): |
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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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