GitHub user WeichenXu123 opened a pull request:
https://github.com/apache/spark/pull/17706
fix MLOR coeffs centering when reg == 0
## What changes were proposed in this pull request?
When reg == 0, MLOR has multiple solutions and we need to centralize the
coeffs to get identical result.
BUT current implementation centralize the `coefficientMatrix` by the global
coeffs means.
In fact the `coefficientMatrix` should be centralized on each feature index
itself.
## How was this patch tested?
N/A
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/WeichenXu123/spark mlor_center
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/17706.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 #17706
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commit 1d0fb873080e29b2da667e2be35172ff3be10194
Author: WeichenXu <[email protected]>
Date: 2017-04-21T02:21:44Z
init pr
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