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    67089149
    [SPARK-16494][ML] Upgrade breeze version to 0.12 · 67089149
    Yanbo Liang authored
    ## What changes were proposed in this pull request?
    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 ```LBFGS-B``` which is an implementation of ```LBFGS``` with box constraints and much faster for some special case.
    We would like to implement Huber loss function for ```LinearRegression``` ([SPARK-3181](https://issues.apache.org/jira/browse/SPARK-3181)) and it requires ```LBFGS-B``` as the optimization solver. So we should bump up the dependent breeze version to 0.12.
    For more features, improvements and bug fixes of breeze 0.12, you can refer the following link:
    https://groups.google.com/forum/#!topic/scala-breeze/nEeRi_DcY5c
    
    ## How was this patch tested?
    No new tests, should pass the existing ones.
    
    Author: Yanbo Liang <ybliang8@gmail.com>
    
    Closes #14150 from yanboliang/spark-16494.
    67089149
    [SPARK-16494][ML] Upgrade breeze version to 0.12
    Yanbo Liang authored
    ## What changes were proposed in this pull request?
    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 ```LBFGS-B``` which is an implementation of ```LBFGS``` with box constraints and much faster for some special case.
    We would like to implement Huber loss function for ```LinearRegression``` ([SPARK-3181](https://issues.apache.org/jira/browse/SPARK-3181)) and it requires ```LBFGS-B``` as the optimization solver. So we should bump up the dependent breeze version to 0.12.
    For more features, improvements and bug fixes of breeze 0.12, you can refer the following link:
    https://groups.google.com/forum/#!topic/scala-breeze/nEeRi_DcY5c
    
    ## How was this patch tested?
    No new tests, should pass the existing ones.
    
    Author: Yanbo Liang <ybliang8@gmail.com>
    
    Closes #14150 from yanboliang/spark-16494.
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