spark-instrumented-optimizer/python
Xusen Yin a6428292f7 [SPARK-14931][ML][PYTHON] Mismatched default values between pipelines in Spark and PySpark - update
## What changes were proposed in this pull request?

This PR is an update for [https://github.com/apache/spark/pull/12738] which:
* Adds a generic unit test for JavaParams wrappers in pyspark.ml for checking default Param values vs. the defaults in the Scala side
* Various fixes for bugs found
  * This includes changing classes taking weightCol to treat unset and empty String Param values the same way.

Defaults changed:
* Scala
 * LogisticRegression: weightCol defaults to not set (instead of empty string)
 * StringIndexer: labels default to not set (instead of empty array)
 * GeneralizedLinearRegression:
   * maxIter always defaults to 25 (simpler than defaulting to 25 for a particular solver)
   * weightCol defaults to not set (instead of empty string)
 * LinearRegression: weightCol defaults to not set (instead of empty string)
* Python
 * MultilayerPerceptron: layers default to not set (instead of [1,1])
 * ChiSqSelector: numTopFeatures defaults to 50 (instead of not set)

## How was this patch tested?

Generic unit test.  Manually tested that unit test by changing defaults and verifying that broke the test.

Author: Joseph K. Bradley <joseph@databricks.com>
Author: yinxusen <yinxusen@gmail.com>

Closes #12816 from jkbradley/yinxusen-SPARK-14931.
2016-05-01 12:29:01 -07:00
..
docs [SPARK-14573][PYSPARK][BUILD] Fix PyDoc Makefile & highlighting issues 2016-04-14 09:42:15 +01:00
lib [SPARK-13848][SPARK-5185] Update to Py4J 0.9.2 in order to fix classloading issue 2016-03-14 12:22:02 -07:00
pyspark [SPARK-14931][ML][PYTHON] Mismatched default values between pipelines in Spark and PySpark - update 2016-05-01 12:29:01 -07:00
test_support [SPARK-14555] First cut of Python API for Structured Streaming 2016-04-20 10:32:01 -07:00
.gitignore [SPARK-3946] gitignore in /python includes wrong directory 2014-10-14 14:09:39 -07:00
pylintrc [SPARK-13596][BUILD] Move misc top-level build files into appropriate subdirs 2016-03-07 14:48:02 -08:00
run-tests [SPARK-8583] [SPARK-5482] [BUILD] Refactor python/run-tests to integrate with dev/run-tests module system 2015-06-27 20:24:34 -07:00
run-tests.py [SPARK-13579][BUILD] Stop building the main Spark assembly. 2016-04-04 16:52:22 -07:00