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24 lines
814 B
24 lines
814 B
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class IntervalTrigger():
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"""A Predicate to do something every N cycle."""
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def __init__(self, period: int, unit: str):
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if unit not in ("iteration", "epoch"):
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raise ValueError("unit should be 'iteration' or 'epoch'")
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if period <= 0:
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raise ValueError("period should be a positive integer.")
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self.period = period
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self.unit = unit
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self.last_index = None
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def __call__(self, trainer):
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if self.last_index is None:
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last_index = getattr(trainer.updater.state, self.unit)
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self.last_index = last_index
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last_index = self.last_index
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index = getattr(trainer.updater.state, self.unit)
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fire = index // self.period != last_index // self.period
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self.last_index = index
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return fire |