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https://issues.apache.org/jira/browse/SPARK-6442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14628474#comment-14628474
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Joseph K. Bradley commented on SPARK-6442:
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[~mengxr] [~brkyvz] What was the motivation behind not using commons math?
Actually, I was not clear on the scope of this JIRA: Was it to create thin
wrappers around Breeze or to re-implement some of the operations which are less
efficient in Breeze?
[~srowen] Concerning Breeze, I think the reason we don't expose it is that it
does not promise stable APIs and is not backed by a big contributor base. But
I agree with the sentiment that we are spread very thin and should be careful
about these nice-but-not-necessary features.
At any rate, I'm pretty sure this is not slated for 1.5, so I'll remove that
target label at least.
> MLlib Local Linear Algebra Package
> ----------------------------------
>
> Key: SPARK-6442
> URL: https://issues.apache.org/jira/browse/SPARK-6442
> Project: Spark
> Issue Type: New Feature
> Components: MLlib
> Reporter: Burak Yavuz
> Priority: Critical
>
> MLlib's local linear algebra package doesn't have any support for any type of
> matrix operations. With 1.5, we wish to add support to a complete package of
> optimized linear algebra operations for Scala/Java users.
> The main goal is to support lazy operations so that element-wise can be
> implemented in a single for-loop, and complex operations can be interfaced
> through BLAS.
> The design doc: http://goo.gl/sf5LCE
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