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ENH Adds final_estimator in html repr for Stacking* #19564

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Merged
glemaitre merged 4 commits into from
Apr 9, 2021
Merged

ENH Adds final_estimator in html repr for Stacking* #19564

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b05bab2
ENH Adds final_estimator in html repr for Stacking
thomasjpfan Feb 25, 2021
7ab537d
DOC Adds comment
thomasjpfan Feb 26, 2021
2fda954
DOC add entry whats new
glemaitre Apr 9, 2021
8d79b81
Merge branch 'main' into html_visual_update
glemaitre Apr 9, 2021
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4 changes: 4 additions & 0 deletions doc/whats_new/v1.0.rst
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Expand Up @@ -154,6 +154,10 @@ Changelog
experimental. They are now considered stable and are subject to the same
deprecation cycles as all other estimators. :pr:`19799` by `Nicolas Hug`_.

- |Enhancement| Improve the HTML rendering of the
:class:`ensemble.StackingClassifier` and :class:`ensemble.StackingRegressor`.
:pr:`19564` by `Thomas Fan`_.

:mod:`sklearn.feature_extraction`
.................................

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11 changes: 8 additions & 3 deletions sklearn/ensemble/_stacking.py
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Expand Up @@ -250,9 +250,14 @@ def _sk_visual_block_(self, final_estimator):
names, estimators = zip(*self.estimators)
parallel = _VisualBlock('parallel', estimators, names=names,
dash_wrapped=False)
serial = _VisualBlock('serial', (parallel, final_estimator),
dash_wrapped=False)
return _VisualBlock('serial', [serial])

# final estimator is wrapped in a parallel block to show the label:
# 'final_estimator' in the html repr
final_block = _VisualBlock('parallel', [final_estimator],
names=['final_estimator'],
dash_wrapped=False)
return _VisualBlock('serial', (parallel, final_block),
dash_wrapped=False)


class StackingClassifier(ClassifierMixin, _BaseStacking):
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