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Posted to issues@spark.apache.org by "Xiangrui Meng (JIRA)" <ji...@apache.org> on 2015/04/29 23:54:07 UTC

[jira] [Resolved] (SPARK-7222) Added mathematical derivation in comment and compressed the model to LinearRegression with ElasticNet

     [ https://issues.apache.org/jira/browse/SPARK-7222?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xiangrui Meng resolved SPARK-7222.
----------------------------------
       Resolution: Fixed
    Fix Version/s: 1.4.0

Issue resolved by pull request 5767
[https://github.com/apache/spark/pull/5767]

> Added mathematical derivation in comment and compressed the model to LinearRegression with ElasticNet
> -----------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-7222
>                 URL: https://issues.apache.org/jira/browse/SPARK-7222
>             Project: Spark
>          Issue Type: Improvement
>          Components: ML
>            Reporter: DB Tsai
>             Fix For: 1.4.0
>
>
> Added detailed mathematical derivation of how scaling and LeastSquaresAggregator work. Also refactored the code so the model is compressed based on the storage. We may try compress based on the prediction time. TODO: Add test that fail the test when the correction terms are not correctly computed.



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