[SPARK-2478] [mllib] DecisionTree Python API#1727

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jkbradley wants to merge 44 commits intoapache:masterfrom

jkbradley:decisiontree-python-new

Commits on Jul 31, 2014

Bug fix: Off-by-1 when finding thresholds for splits for continuous features.
jkbradley
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Merge branch 'decisiontree-bugfix' into decisiontree-python-new
jkbradley
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Changed Strategy so it only requires numClassesForClassification >= 2 for classification
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Added one more test to DecisionTreeSuite: stump with 2 continuous variables for binary classification. Caused problems in past, but fixed now.
jkbradley
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Merge branch 'decisiontree-bugfix' into decisiontree-python-new
jkbradley
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Merge remote-tracking branch 'upstream/master' into decisiontree-bugfix
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* Updated Strategy to check numClassesForClassification only if algo=Classification.
jkbradley
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Merge remote-tracking branch 'upstream/master' into decisiontree-python-new
jkbradley
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Merge branch 'decisiontree-bugfix' into decisiontree-python-new
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Updated meaning of maxDepth by 1 to fit scikit-learn and rpart.
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In DecisionTree: Changed from using procedural syntax for functions returning Unit to explicitly writing Unit return type.
jkbradley
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Merge remote-tracking branch 'upstream/master' into decisiontree-bugfix
jkbradley
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Merge remote-tracking branch 'upstream/master' into decisiontree-bugfix
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Added documentation for DecisionTree internals
jkbradley
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Merge remote-tracking branch 'upstream/master' into decisiontree-python-new
jkbradley
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Merge branch 'decisiontree-bugfix' into decisiontree-python-new
jkbradley
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Small doc and style updates
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Commits on Aug 1, 2014

Commits on Aug 2, 2014