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From "Feynman Liang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-9224) OnlineLDAOptimizer Performance Improvements
Date Tue, 21 Jul 2015 18:03:05 GMT

     [ https://issues.apache.org/jira/browse/SPARK-9224?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Feynman Liang updated SPARK-9224:
---------------------------------
      Priority: Major  (was: Critical)
    Issue Type: Improvement  (was: Bug)

> OnlineLDAOptimizer Performance Improvements
> -------------------------------------------
>
>                 Key: SPARK-9224
>                 URL: https://issues.apache.org/jira/browse/SPARK-9224
>             Project: Spark
>          Issue Type: Improvement
>          Components: MLlib
>            Reporter: Feynman Liang
>
> OnlineLDAOptimizer's current implementation can be improved by using in-place updating
(instead of reassignment to vars), reducing number of transpositions, and an outer product
(instead of looping) to collect stats.



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