Fix to check if len(y) > 1 when normalize option is enabled in GaussianProcess._gpr.fit #19474
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Thanks for the PR @th-yoon , looking at the other PRs it seems that the more general issue is when |
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Closing because #19703 has tests and recent reviews to resolve the issue. |
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Reference Issues/PRs
#19361
#18388
What does this implement/fix? Explain your changes.
Normalizing
ywhenlen(y) <= 1does not make sense, asself._y_train_std = np.std(y, axis=0)will become0, which would lead todivide-by-zero.Any other comments?