GitHub user VinceShieh opened a pull request:
https://github.com/apache/spark/pull/17894
[SPARK-17134][ML] Use level 2 BLAS operations in LogisticAggregator
## What changes were proposed in this pull request?
Multinomial logistic regression uses LogisticAggregator class for gradient
updates.
This PR refactors MLOR to use level 2 BLAS operations for the updates
## How was this patch tested?
Existing test would do
Signed-off-by: VinceShieh <[email protected]>
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/VinceShieh/spark SPARK-17134
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/17894.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 #17894
----
commit b4fd733a708feb63254728f3af1fd20ee892d085
Author: VinceShieh <[email protected]>
Date: 2017-05-08T01:54:30Z
[SPARK-17134][ML] Use level 2 BLAS operations in LogisticAggregator
Multinomial logistic regression uses LogisticAggregator class for gradient
updates.
This PR refactors MLOR to use level 2 BLAS operations for the updates.
Signed-off-by: VinceShieh <[email protected]>
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