Xiangrui Meng created SPARK-7245:
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Summary: Spearman correlation for DataFrames
Key: SPARK-7245
URL: https://issues.apache.org/jira/browse/SPARK-7245
Project: Spark
Issue Type: Sub-task
Components: SQL
Reporter: Xiangrui Meng
Assignee: Xiangrui Meng
Spearman correlation is harder than Pearson to compute.
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df.stat.corr(col1, col2, method="spearman"): Double
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