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Source code for catalyst.tools.metric_handler

# flake8: noqa
# @TODO: we also can make it BestScoreHanlder and store best score inside
from functools import partial


def _is_better_min(score, best, min_delta):
    return score <= (best - min_delta)


def _is_better_max(score, best, min_delta):
    return score >= (best + min_delta)


[docs]class MetricHandler: """@TODO: docs. Args: minimize: @TODO: docs min_delta: @TODO: docs """
[docs] def __init__(self, minimize: bool = True, min_delta: float = 1e-6): """Init.""" self.minimize = minimize self.min_delta = min_delta # self.best_score = None if self.minimize: self.is_better = partial(_is_better_min, min_delta=min_delta) else: self.is_better = partial(_is_better_max, min_delta=min_delta)
def __call__(self, score, best_score): """@TODO: docs.""" # if self.best_score is None or self.is_better(score, self.best_score): # self.best_score = score # return True # else: # return False return self.is_better(score, best_score)
__all__ = ["MetricHandler"]