You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@flink.apache.org by "Dong Lin (Jira)" <ji...@apache.org> on 2023/04/01 02:53:00 UTC

[jira] [Resolved] (FLINK-31029) KBinsDiscretizer gives wrong bin edges in 'quantile' strategy when input data contains only 2 distinct values

     [ https://issues.apache.org/jira/browse/FLINK-31029?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dong Lin resolved FLINK-31029.
------------------------------
    Resolution: Fixed

> KBinsDiscretizer gives wrong bin edges in 'quantile' strategy when input data contains only 2 distinct values
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: FLINK-31029
>                 URL: https://issues.apache.org/jira/browse/FLINK-31029
>             Project: Flink
>          Issue Type: Bug
>          Components: Library / Machine Learning
>            Reporter: Fan Hong
>            Assignee: Zhipeng Zhang
>            Priority: Major
>              Labels: pull-request-available
>
> When one input column contains only 2 distinct values and their counts are same, KBinsDiscretizer transforms this column to all 0s using `quantile` strategy. An example of such column is `[0, 0, 0, 1, 1, 1]`.
> When the 2 distinct values have different counts, the transformed values are also all 0s, which cannot distinguish them.



--
This message was sent by Atlassian Jira
(v8.20.10#820010)