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Posted to issues@ignite.apache.org by "Aleksey Zinoviev (JIRA)" <ji...@apache.org> on 2018/08/29 15:11:00 UTC

[jira] [Updated] (IGNITE-9145) [ML] Add different strategies to index labels in StringEncoderTrainer

     [ https://issues.apache.org/jira/browse/IGNITE-9145?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Aleksey Zinoviev updated IGNITE-9145:
-------------------------------------
    Fix Version/s:     (was: 2.7)

> [ML] Add different strategies to index labels in StringEncoderTrainer
> ---------------------------------------------------------------------
>
>                 Key: IGNITE-9145
>                 URL: https://issues.apache.org/jira/browse/IGNITE-9145
>             Project: Ignite
>          Issue Type: Improvement
>          Components: ml
>            Reporter: Aleksey Zinoviev
>            Assignee: Aleksey Zinoviev
>            Priority: Major
>
> The main idea to add a few strategies of indexing: sorting and so on.
> Currently it supports only one strategy (most popular with zero and less popular with the max index size).
> There are can be a few options
>  * 'frequencyDesc': descending order by label frequency (most frequent label assigned 0)
>  * 'frequencyAsc': ascending order by label frequency (least frequent label assigned 0)
>  * 'alphabetDesc': descending alphabetical order
>  * 'alphabetAsc': ascending alphabetical order
>  
> Please, update the method **transformFrequenciesToEncodingValues and add the strategy as a parameter of trainer.
>  



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