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From "Makoto Yui (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVEMALL-201) Evaluate, fix and document FFM so Hivemall produces comparable accuracy to LIBFFM
Date Wed, 16 May 2018 09:31:00 GMT

    [ https://issues.apache.org/jira/browse/HIVEMALL-201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16477159#comment-16477159
] 

Makoto Yui commented on HIVEMALL-201:
-------------------------------------

In my experience, Instancce-wise normalization has no meaning and has bad effects.
Libffm is doing Element-wise normalization.

> Evaluate, fix and document FFM so Hivemall produces comparable accuracy to LIBFFM
> ---------------------------------------------------------------------------------
>
>                 Key: HIVEMALL-201
>                 URL: https://issues.apache.org/jira/browse/HIVEMALL-201
>             Project: Hivemall
>          Issue Type: Improvement
>            Reporter: Takuya Kitazawa
>            Assignee: Takuya Kitazawa
>            Priority: Major
>
> [https://github.com/guestwalk/kaggle-2014-criteo]
> We expect Hivemall's FFM capability to replicate the similar accuracy with LIBFFM's one.
Fix its implementation if needed, and document the usage and results as well.



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