zhengruifeng created SPARK-28117:
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Summary: LDA and BisectingKMeans cache the input dataset if
necessary
Key: SPARK-28117
URL: https://issues.apache.org/jira/browse/SPARK-28117
Project: Spark
Issue Type: Improvement
Components: ML
Affects Versions: 3.0.0
Reporter: zhengruifeng
In MLLIB-LDA, if the EM solver caches the dataset internally, while the Online
do not.
So in the ML-LDA, we need to cache the internmediate dataset if necessary.
BisectingKMeans also needs too.
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