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Posted to issues@ignite.apache.org by "Alexey Zinoviev (Jira)" <ji...@apache.org> on 2019/11/19 10:46:00 UTC

[jira] [Assigned] (IGNITE-11664) [ML] Use Double.NaN as default values for missing values in Vector

     [ https://issues.apache.org/jira/browse/IGNITE-11664?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alexey Zinoviev reassigned IGNITE-11664:
----------------------------------------

    Assignee: Alexey Zinoviev  (was: Alexey Platonov)

> [ML] Use Double.NaN as default values for missing values in Vector
> ------------------------------------------------------------------
>
>                 Key: IGNITE-11664
>                 URL: https://issues.apache.org/jira/browse/IGNITE-11664
>             Project: Ignite
>          Issue Type: Improvement
>          Components: ml
>            Reporter: Alexey Platonov
>            Assignee: Alexey Zinoviev
>            Priority: Major
>              Labels: stability
>
> Currently, we use 0.0 value for default values in vectors if a value is missing. But this way contradicts to preprocessors politics where for missing values Double.NaN is using. Moreover, Double.NaN is a more convenient value for missing feature values.



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