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Posted to issues@spark.apache.org by "Liang-Chi Hsieh (JIRA)" <ji...@apache.org> on 2014/12/09 11:26:13 UTC

[jira] [Created] (SPARK-4797) Replace breezeSquaredDistance

Liang-Chi Hsieh created SPARK-4797:
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             Summary: Replace breezeSquaredDistance
                 Key: SPARK-4797
                 URL: https://issues.apache.org/jira/browse/SPARK-4797
             Project: Spark
          Issue Type: Improvement
            Reporter: Liang-Chi Hsieh
            Priority: Minor


This PR replaces slow breezeSquaredDistance. A simple calculation involving 40000 vectors of 20000 dims shows:

* breezeSquaredDistance: ~12 secs
* This PR: ~10.5 secs




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