GitHub user BigCrunsh opened a pull request:
https://github.com/apache/spark/pull/2398
[SPARK-3396][MLLIB] Use SquaredL2Updater in LogisticRegressionWithSGD
SimpleUpdater ignores the regularizer, which leads to an unregularized
LogReg. To enable the common L2 regularizer (and the corresponding
regularization parameter) for logistic regression the SquaredL2Updater
has to be used in SGD (see, e.g., [SVMWithSGD])
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/soundcloud/spark fix-regparam-logreg
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/2398.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #2398
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commit 0820c04bf26be840d0137b730e497ce4305938b1
Author: Christoph Sawade <[email protected]>
Date: 2014-09-15T14:00:02Z
Use SquaredL2Updater in LogisticRegressionWithSGD
SimpleUpdater ignores the regularizer, which leads to an unregularized
LogReg. To enable the common L2 regularizer (and the corresponding
regularization parameter) for logistic regression the SquaredL2Updater
has to be used in SGD (see, e.g., [SVMWithSGD])
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