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Unverified Commit 46a20ab0 authored by jmoralez's avatar jmoralez Committed by GitHub
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use dy_true mean in denominator for r2_score (#4151)

parent 1ce4b22b
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tests/python_package_test/test_dask.py
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...@@ -198,7 +198,7 @@ def _create_data(objective, n_samples=1_000, output='array', chunk_size=500, **k ...@@ -198,7 +198,7 @@ def _create_data(objective, n_samples=1_000, output='array', chunk_size=500, **k
def _r2_score(dy_true, dy_pred): def _r2_score(dy_true, dy_pred):
numerator = ((dy_true - dy_pred) ** 2).sum(axis=0, dtype=np.float64) numerator = ((dy_true - dy_pred) ** 2).sum(axis=0, dtype=np.float64)
denominator = ((dy_true - dy_pred.mean(axis=0)) ** 2).sum(axis=0, dtype=np.float64) denominator = ((dy_true - dy_true.mean(axis=0)) ** 2).sum(axis=0, dtype=np.float64)
return (1 - numerator / denominator).compute() return (1 - numerator / denominator).compute()
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