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Posted to issues@madlib.apache.org by "Frank McQuillan (JIRA)" <ji...@apache.org> on 2017/10/23 20:52:00 UTC

[jira] [Updated] (MADLIB-1067) Use Eigen in the implementation of array_dot

     [ https://issues.apache.org/jira/browse/MADLIB-1067?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Frank McQuillan updated MADLIB-1067:
------------------------------------
    Fix Version/s: v2.0

> Use Eigen in the implementation of array_dot
> --------------------------------------------
>
>                 Key: MADLIB-1067
>                 URL: https://issues.apache.org/jira/browse/MADLIB-1067
>             Project: Apache MADlib
>          Issue Type: Improvement
>          Components: Module: Linear-Algebra Functions
>            Reporter: Mauricio Scheffer
>             Fix For: v2.0
>
>
> Currently (MADlib 1.9.1) cosine_similarity has better performance than array_dot. 
> It seems that array_dot should be using the dot product implementation from Eigen, like cosine_similarity.
> See http://mail-archives.apache.org/mod_mbox/incubator-madlib-user/201702.mbox/%3CCAAKWcNHoxdVdEjRsAOjC9Zukjo2e5cLBP2XPFFC6f8XiXSMykA%40mail.gmail.com%3E



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