GitHub user yanboliang opened a pull request:
https://github.com/apache/spark/pull/11365
[SPARK-13322] [ML] AFTSurvivalRegression supports feature standardization
## What changes were proposed in this pull request?
AFTSurvivalRegression should support feature standardization, it will
improve the convergence rate.
## How was this patch tested?
unit test.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/yanboliang/spark spark-13322
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/11365.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 #11365
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commit 0e5efab562d4174908fab5d9d9a788c95fb183e0
Author: Yanbo Liang <[email protected]>
Date: 2016-02-25T06:27:52Z
AFTSurvivalRegression supports feature standardization
commit ae28544d9141c8ddbad57ee79873125edbb115ec
Author: Yanbo Liang <[email protected]>
Date: 2016-02-25T07:57:42Z
add test case: numerical stability of standardization
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