GitHub user feynmanliang opened a pull request:
https://github.com/apache/spark/pull/7836
[SPARK-8936] OnlineLDA document-topic Dirichlet hyperparameter optimization
@jkbradley Please review after #7801 merges.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/feynmanliang/spark SPARK-8936-alpha-optimize
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/7836.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 #7836
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commit 5f62b20e85b5907c64b4757379e8f8940b36a006
Author: Feynman Liang <[email protected]>
Date: 2015-07-30T18:02:06Z
Add logLikelihood
commit 6d1b2c9df1e8620ff5c0dde09573a48a329d36a4
Author: Feynman Liang <[email protected]>
Date: 2015-07-31T16:56:17Z
Negate perplexity definition
commit cef5b764c811f2d72af4b9644f7da194cf78be69
Author: Feynman Liang <[email protected]>
Date: 2015-07-31T17:50:46Z
Hyperparameter optimization
(cherry picked from commit 9f67a803df765170342be0c56239b679192df32c)
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