Yanbo Liang created SPARK-17033:
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Summary: GaussianMixture should use treeAggregate to improve
performance
Key: SPARK-17033
URL: https://issues.apache.org/jira/browse/SPARK-17033
Project: Spark
Issue Type: Improvement
Reporter: Yanbo Liang
Priority: Minor
{{GaussianMixture}} should use {{treeAggregate}} rather than {{aggregate}} to
improve performance and scalability. In my test of dataset with 200 features
and 1M instance, I found there are 20% increased performance.
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