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https://issues.apache.org/jira/browse/SPARK-3820?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiangrui Meng reopened SPARK-3820:
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> Specialize columnSimilarity() without any threshold
> ---------------------------------------------------
>
> Key: SPARK-3820
> URL: https://issues.apache.org/jira/browse/SPARK-3820
> Project: Spark
> Issue Type: Improvement
> Components: MLlib
> Reporter: Xiangrui Meng
> Assignee: Reza Zadeh
>
> `RowMatrix.columnSimilarities` calls `RowMatrix.columnSimilarity(0.0)` to
> compute the exact cosine similarities. It still requires sampling, which is
> unnecessary for this case. We should have a specialized version for it, in
> order to have a fair comparison with DIMSUM.
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