FIX do not report wrong iteration number when initialization of EM does not converge #26837
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Hi @krstopro, thanks for opening the Pull Request. Could you please add a short section to your description that explains "What does this implement/fix?" as well as explaining your changes. The title also needs improving to be more descriptive. All this helps people know what the PR is about, what needs doing, etc which will reduce the time it takes for things to get reviewed and merged. |
glemaitre
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glemaitre
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sklearn/mixture/_base.py
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| """Print verbose message on the end of iteration.""" | ||
| if self.verbose == 1: | ||
| print("Initialization converged: %s" % self.converged_) | ||
| print("Initialization converged: %s" % converged) |
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The message will look weird because we will get: "Initialization converged: False"
It would be better to report that the convergence did not happen using a proper English sentence based on converged.
Also I would prefer init_has_converged instead of converged
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However, we can mention that the "Initialization ended".
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We should not have strong test regarding the verbosing. It would make sense to strengthen test_gaussian_mixture_verbose.
glemaitre
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We also need a what's new entry in 1.4 to acknowledge that the error message is fixed. |
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I pushed the requested changes and fixed the doc of the converged_ attribute.
LGTM on my side.
@glemaitre wanna have another look ?
jeremiedbb
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To backport
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@jeremiedbb I'll have a new look. Thanks |
Fixes #26621
When the EM best iteration does not converge, a warning message is raised, indicating a wrong iteration number. As discussed in #26621, we don't need to indicate the number but rather mention that the convergence did not happen.