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author | Xiangrui Meng <meng@databricks.com> | 2014-09-08 18:59:57 -0700 |
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committer | Xiangrui Meng <meng@databricks.com> | 2014-09-08 18:59:57 -0700 |
commit | 50a4fa774a0e8a17d7743b33ce8941bf4041144d (patch) | |
tree | 18089ba49e1450cf1b76238c9b435883f7003474 /python | |
parent | 7db53391f1b349d1f49844197b34f94806f5e336 (diff) | |
download | spark-50a4fa774a0e8a17d7743b33ce8941bf4041144d.tar.gz spark-50a4fa774a0e8a17d7743b33ce8941bf4041144d.tar.bz2 spark-50a4fa774a0e8a17d7743b33ce8941bf4041144d.zip |
[SPARK-3443][MLLIB] update default values of tree:
Adjust the default values of decision tree, based on the memory requirement discussed in https://github.com/apache/spark/pull/2125 :
1. maxMemoryInMB: 128 -> 256
2. maxBins: 100 -> 32
3. maxDepth: 4 -> 5 (in some example code)
jkbradley
Author: Xiangrui Meng <meng@databricks.com>
Closes #2322 from mengxr/tree-defaults and squashes the following commits:
cda453a [Xiangrui Meng] fix tests
5900445 [Xiangrui Meng] update comments
8c81831 [Xiangrui Meng] update default values of tree:
Diffstat (limited to 'python')
-rw-r--r-- | python/pyspark/mllib/tree.py | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/python/pyspark/mllib/tree.py b/python/pyspark/mllib/tree.py index a2fade61e9..ccc000ac70 100644 --- a/python/pyspark/mllib/tree.py +++ b/python/pyspark/mllib/tree.py @@ -138,7 +138,7 @@ class DecisionTree(object): @staticmethod def trainClassifier(data, numClasses, categoricalFeaturesInfo, - impurity="gini", maxDepth=4, maxBins=100): + impurity="gini", maxDepth=5, maxBins=32): """ Train a DecisionTreeModel for classification. @@ -170,7 +170,7 @@ class DecisionTree(object): @staticmethod def trainRegressor(data, categoricalFeaturesInfo, - impurity="variance", maxDepth=4, maxBins=100): + impurity="variance", maxDepth=5, maxBins=32): """ Train a DecisionTreeModel for regression. |