GitHub user feynmanliang opened a pull request:
https://github.com/apache/spark/pull/7454
[MLlib]OnlineLDA Performance Improvements
Use range-slicing (coalesced memory access), in-place updates, and reduce
number of transposes in OnlineLDA implementation.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/feynmanliang/spark OnlineLDA-perf-improvements
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/7454.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 #7454
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commit aead650cc2f36c8781b70ef6b377395440688837
Author: Feynman Liang <[email protected]>
Date: 2015-07-16T23:50:03Z
Range slice, in-place update, reduce transposes
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