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Posted to issues@spark.apache.org by "Yanbo Liang (JIRA)" <ji...@apache.org> on 2016/07/12 08:41:20 UTC

[jira] [Created] (SPARK-16494) Upgrade breeze to 0.12

Yanbo Liang created SPARK-16494:
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             Summary: Upgrade breeze to 0.12
                 Key: SPARK-16494
                 URL: https://issues.apache.org/jira/browse/SPARK-16494
             Project: Spark
          Issue Type: Improvement
          Components: ML, MLlib
            Reporter: Yanbo Liang


breeze 0.12 has been released for more than half a year, and it brings lots of new features, performance improvement and bug fixes.
One of the biggest features is L-BFGS-B which is a first order optimizer than accepts box constraints and more faster for some special cases.
Sine we would like to implement Huber loss function for {{LinearRegression}} (SPARK-3181) and it requires the underneath optimization algorithms supporting L-BFGS-B. So we should bump up the dependent breeze version to 0.12.

https://groups.google.com/forum/#!topic/scala-breeze/nEeRi_DcY5c



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