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Fix error msg for alpha in PinballLoss #1018

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Fix error msg for alpha in PinballLoss #1018

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Fix error msg for alpha in PinballLoss
Ahmed-Zahran02 Mar 31, 2026
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Ahmed-Zahran02 Mar 31, 2026
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14 changes: 8 additions & 6 deletions skpro/metrics/_classes.py
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Original file line number Diff line number Diff line change
Expand Up @@ -124,12 +124,14 @@ def _evaluate_by_index(self, y_true, y_pred, **kwargs):
if alpha is None:
alphas = y_pred_alphas
else:
# if alpha was provided, check whether they are predicted
# if not all alpha are observed, raise a ValueError
if not np.isin(alpha, y_pred_alphas).all():
# todo: make error msg more informative
# which alphas are missing
msg = "not all quantile values in alpha are available in y_pred"
missing_alphas = np.setdiff1d(alpha, y_pred_alphas)
if len(missing_alphas) > 0:
msg = (
f"{type(self).__name__}: Not all quantile values in `alpha` are "
f"available in `y_pred`. Requested alphas: {list(alpha)}; "
f"available alphas: {list(y_pred_alphas)}; "
f"missing alphas: {missing_alphas.tolist()}"
)
raise ValueError(msg)
else:
alphas = alpha
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