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Posted to issues@spark.apache.org by "zhengruifeng (Jira)" <ji...@apache.org> on 2019/12/31 11:29:00 UTC

[jira] [Created] (SPARK-30398) PCA/RegressionMetrics/RowMatrix avoid unnecessary computation

zhengruifeng created SPARK-30398:
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             Summary: PCA/RegressionMetrics/RowMatrix avoid unnecessary computation
                 Key: SPARK-30398
                 URL: https://issues.apache.org/jira/browse/SPARK-30398
             Project: Spark
          Issue Type: Improvement
          Components: ML, MLlib
    Affects Versions: 3.0.0
            Reporter: zhengruifeng


use Summarizer instead of MultivariateOnlineSummarizer to avoid computation of unused metrics



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