jack li created SPARK-25941:
-------------------------------
Summary: Random forest score decreased due to updating spark
version
Key: SPARK-25941
URL: https://issues.apache.org/jira/browse/SPARK-25941
Project: Spark
Issue Type: Bug
Components: Deploy, Input/Output, ML
Affects Versions: 2.3.2
Reporter: jack li
h3. Problem description
I use different versions of spark to analyze random forest scores..
* spark-core_2.10 {{version 2.0.0 }}
** RandomForestsKaggle Score = 0.8978765219058574
* spark-core_2.11 {{version 2.4.0 }}
** RandomForestsKaggle Score = 0.8886987035251259
Source : https://github.com/smartscity/Kaggle_Titanic_spark
[github source and
readme|https://github.com/smartscity/Kaggle_Titanic_spark/blob/master/README.md]
h3. Introduce
This case is Titanic Competitions on the Kaggle.
[https://www.kaggle.com/c/titanic]
h3. Conclusion
After upgrading the spark version({{version 2.4.0}}), the random forest score
dropped({{0.01}}).
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