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From "Takuya Kitazawa (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (HIVEMALL-162) Support `l1_normalize` for feature vector
Date Mon, 18 Dec 2017 07:32:00 GMT

     [ https://issues.apache.org/jira/browse/HIVEMALL-162?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Takuya Kitazawa closed HIVEMALL-162.
------------------------------------
    Resolution: Implemented

> Support `l1_normalize` for feature vector
> -----------------------------------------
>
>                 Key: HIVEMALL-162
>                 URL: https://issues.apache.org/jira/browse/HIVEMALL-162
>             Project: Hivemall
>          Issue Type: New Feature
>            Reporter: Takuya Kitazawa
>            Assignee: Takuya Kitazawa
>            Priority: Minor
>
> Similarly to {{[l2_normalize|https://github.com/apache/incubator-hivemall/blob/master/core/src/main/java/hivemall/ftvec/scaling/L2NormalizationUDF.java]}}
UDF, we can support L1 normalization, even though it can be achieved by standard HiveQL syntax
(i.e.,
>  something like {{col / sum(col)}}).



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