GitHub user yanboliang opened a pull request:
https://github.com/apache/spark/pull/14150
[SPARK-16494] [ML] Upgrade breeze version to 0.12
## What changes were proposed in this pull request?
breeze 0.12 has been released for more than half a year, and it brings lots
of new features, performance improvement and bug fixes.
One of the biggest features is ```LBFGS-B``` which is an implementation of
```LBFGS``` with box constraints and much faster for some special case.
We would like to implement Huber loss function for LinearRegression
(SPARK-3181) and it requires ```LBFGS-B``` as the optimization solver. So we
should bump up the dependent breeze version to 0.12.
For more features, improvements and bug fixes of breeze 0.12, you can refer
the following link:
https://groups.google.com/forum/#!topic/scala-breeze/nEeRi_DcY5c
## How was this patch tested?
No new tests, should pass the existing ones.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/yanboliang/spark spark-16494
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/14150.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 #14150
----
commit ba01c7e1d369fecda8a80f4b77eb4ee663b73c07
Author: Yanbo Liang <yblia...@gmail.com>
Date: 2016-07-12T08:50:48Z
Upgrade breeze to 0.12
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