Feynman Liang created SPARK-9224:
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Summary: OnlineLDAOptimizer Performance Improvements
Key: SPARK-9224
URL: https://issues.apache.org/jira/browse/SPARK-9224
Project: Spark
Issue Type: Bug
Components: MLlib
Reporter: Feynman Liang
Priority: Critical
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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