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[MRG] Add Explanation of MSE vs Friedman MSE vs MAE criterion in Regression Tree Building #9367

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merged 2 commits into from Jul 17, 2017

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warut-vijit
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Reference Issue

Example: Fixes #9355

What does this implement/fix? Explain your changes.

Modifies docs of DecisionTreeRegressor class to better explain criteria
MSE, Friedman MSE, MAE.

Any other comments?

@warut-vijit warut-vijit changed the title Add Explanation of MSE vs Friedman MSE vs MAE criterion in Regression Tree Building [MRG] Add Explanation of MSE vs Friedman MSE vs MAE criterion in Regression Tree Building Jul 15, 2017
@jmschrei
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Thanks for the contribution. A paragraph or so should be added to doc/module/tree.rst as well.

@warut-vijit
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I can add a paragraph or so, but I believe the changes to include the MAE criterion (PR #8402) already address the MSE and MAE criteria in adequate depth for the average user, although they are not yet on the official docs yet.

@jmschrei
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The gist is that I want to add in a note regarding L1 minimizing the median into the docs. Maybe a full paragraph isn't necessary given the existing equations there. Thanks for the work.

@jmschrei
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LGTM, thanks for the contribution.

@jmschrei jmschrei merged commit 8485d3e into scikit-learn:master Jul 17, 2017
jnothman pushed a commit to jnothman/scikit-learn that referenced this pull request Aug 6, 2017
…ession Tree Building (scikit-learn#9367)

* clarified documentation for regression tree criterion

* added explanation on doc/modules/tree.rst
dmohns pushed a commit to dmohns/scikit-learn that referenced this pull request Aug 7, 2017
…ession Tree Building (scikit-learn#9367)

* clarified documentation for regression tree criterion

* added explanation on doc/modules/tree.rst
dmohns pushed a commit to dmohns/scikit-learn that referenced this pull request Aug 7, 2017
…ession Tree Building (scikit-learn#9367)

* clarified documentation for regression tree criterion

* added explanation on doc/modules/tree.rst
paulha pushed a commit to paulha/scikit-learn that referenced this pull request Aug 19, 2017
…ession Tree Building (scikit-learn#9367)

* clarified documentation for regression tree criterion

* added explanation on doc/modules/tree.rst
AishwaryaRK pushed a commit to AishwaryaRK/scikit-learn that referenced this pull request Aug 29, 2017
…ession Tree Building (scikit-learn#9367)

* clarified documentation for regression tree criterion

* added explanation on doc/modules/tree.rst
maskani-moh pushed a commit to maskani-moh/scikit-learn that referenced this pull request Nov 15, 2017
…ession Tree Building (scikit-learn#9367)

* clarified documentation for regression tree criterion

* added explanation on doc/modules/tree.rst
jwjohnson314 pushed a commit to jwjohnson314/scikit-learn that referenced this pull request Dec 18, 2017
…ession Tree Building (scikit-learn#9367)

* clarified documentation for regression tree criterion

* added explanation on doc/modules/tree.rst
@Penghui-Sun
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Will there be any explanations/math added on the official docs for Friedman MSE?

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Add explanation of MSE vs MAE criterion in tree building
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