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Posted to issues@spark.apache.org by "Sean Owen (JIRA)" <ji...@apache.org> on 2016/08/14 11:03:20 UTC

[jira] [Updated] (SPARK-17027) PolynomialExpansion.choose is prone to integer overflow

     [ https://issues.apache.org/jira/browse/SPARK-17027?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Owen updated SPARK-17027:
------------------------------
    Assignee: Maciej Szymkiewicz

> PolynomialExpansion.choose is prone to integer overflow 
> --------------------------------------------------------
>
>                 Key: SPARK-17027
>                 URL: https://issues.apache.org/jira/browse/SPARK-17027
>             Project: Spark
>          Issue Type: Bug
>          Components: ML
>    Affects Versions: 1.6.0, 2.0.0
>            Reporter: Maciej Szymkiewicz
>            Assignee: Maciej Szymkiewicz
>            Priority: Minor
>             Fix For: 1.6.3, 2.0.1, 2.1.0
>
>
> Current implementation computes power of k directly and because of that it is susceptible to integer overflow on relatively small input (4 features, degree equal 10).  It would be better to use recursive formula instead.



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