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"""Explained Variance. Fraction of variance that is explained by the model."""
import typing
import numpy as np
from h2oaicore.metrics import CustomScorer
import sklearn
class MyExplainedVarianceScorer(CustomScorer):
_description = "My Explained Variance Scorer for Regression."
_regression = True
_maximize = True
_perfect_score = 1
_display_name = "ExpVar"
def score(self,
actual: np.array,
predicted: np.array,
sample_weight: typing.Optional[np.array] = None,
labels: typing.Optional[np.array] = None) -> float:
return sklearn.metrics.explained_variance_score(actual, predicted, sample_weight=sample_weight,
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