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FIX Incorrect warning when clustering boolean data #19046

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Merged
merged 16 commits into from
Jan 21, 2021
Merged

FIX Incorrect warning when clustering boolean data #19046

merged 16 commits into from
Jan 21, 2021

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jdsuryap
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@jdsuryap jdsuryap commented Dec 20, 2020 •
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Fixes #18996

Input X was being converted to float at the beginning of fit() method. However when a pairwise boolean metric was requested, X was again converted to boolean with multiple warning.

This caused were two issues:

  1. The data, if it was already of boolean type, was first converted to float and later to boolean
  2. The low level utility function printed the warning multiple times

As a FIX, a check has been put in place in the fit() method itself to let boolean data pass as such. However, when the data needs to be converted to boolean, it is done at this level only with the same warning that was printed earlier, but only once.

NicolasHug
NicolasHug reviewed Dec 20, 2020
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thanks for the PR @Prakashsur , this looks good so far. Could you please also need a non-regression test making sure that:

  • no warning is raised if the data passed o fit is already converted to bool
  • a single warning (the one you just added) is raised if the data passed to fit isn't converted to bool

thanks!

@jdsuryap jdsuryap changed the title FIX- Incorrect warning when clustering boolean data scikit-learn#18996 [MRG] FIX- Incorrect warning when clustering boolean data scikit-learn#18996 Dec 21, 2020
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@NicolasHug
Both points have been resolved. Shall we take another look and take it forward?

Thanks

NicolasHug
NicolasHug approved these changes Jan 17, 2021
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Thank you @jdsurya ! made some minor comments but LGTM

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cmarmo commented Jan 18, 2021

Hi @jdsurya , thanks for your pull request.
Do you mind fixing the lint errors so that all the check could be run? Thanks!

sklearn/cluster/tests/test_optics.py:219:80: E501 line too long (87 > 79 characters)
    # non-regression test for https://github.com/scikit-learn/scikit-learn/issues/18996
                                                                               ^
sklearn/cluster/tests/test_optics.py:231:80: E501 line too long (87 > 79 characters)
    # non regression test for https://github.com/scikit-learn/scikit-learn/issues/18996

@jdsuryap
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Hi @cmarmo, ntmu!

Thanks for sharing the details! The two linting issues have been fixed and are passing now.

thomasjpfan
thomasjpfan approved these changes Jan 21, 2021
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Thank you for the PR @jdsurya !

LGTM

thomasjpfan
thomasjpfan reviewed Jan 21, 2021
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Please add an entry to the change log at doc/whats_new/v1.0.rst with tag |Fix|. Like the other entries there, please reference this pull request with :pr: and credit yourself (and other contributors if applicable) with :user:.

@thomasjpfan thomasjpfan changed the title [MRG] FIX- Incorrect warning when clustering boolean data scikit-learn#18996 FIX Incorrect warning when clustering boolean data Jan 21, 2021
NicolasHug
NicolasHug reviewed Jan 21, 2021
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Thank you for details regarding the entry into 'whats_new' Thomas @thomasjpfan! The same has been added.

@thomasjpfan thomasjpfan merged commit 364b1e3 into scikit-learn:master Jan 21, 2021
@glemaitre glemaitre mentioned this pull request Apr 22, 2021
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Incorrect warning when clustering boolean data
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@jdsuryap @cmarmo @NicolasHug @thomasjpfan @jdsurya