GitHub user witgo opened a pull request:
https://github.com/apache/spark/pull/3399
[SPARK-4526][MLLIB]GradientDescent get a wrong gradient value according to
the gradient formula.
This is caused by the miniBatchSize parameter.The number of `RDD.sample`
returns is not fixed.
cc @mengxr
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/witgo/spark GradientDescent
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/3399.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 #3399
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commit 606b27a1a6c1e5a1e4c51d01d1f6da9f6ed31524
Author: GuoQiang Li <[email protected]>
Date: 2014-11-21T06:34:50Z
GradientDescent get a wrong gradient value according to the gradient
formula, which is caused by the miniBatchSize parameter.
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