spark-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Peng Meng (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-18062) ProbabilisticClassificationModel.normalizeToProbabilitiesInPlace should return probabilities when given all-0 vector
Date Mon, 24 Oct 2016 04:41:58 GMT

    [ https://issues.apache.org/jira/browse/SPARK-18062?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15600926#comment-15600926
] 

Peng Meng commented on SPARK-18062:
-----------------------------------

This relate to how to understand all-0 rawPrediction, all classes are impossible or all classes
are the same? If the later,  ProbabilisticClassificationModel.normalizeToProbabilitiesInPlace
should return a valid probability vector with the uniform distribution.


> ProbabilisticClassificationModel.normalizeToProbabilitiesInPlace should return probabilities
when given all-0 vector
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-18062
>                 URL: https://issues.apache.org/jira/browse/SPARK-18062
>             Project: Spark
>          Issue Type: Improvement
>          Components: ML
>            Reporter: Joseph K. Bradley
>            Priority: Trivial
>
> {{ProbabilisticClassificationModel.normalizeToProbabilitiesInPlace}} returns a vector
of all-0 when given a rawPrediction vector of all-0.  It should return a valid probability
vector with the uniform distribution.
> Note: This will be a *behavior change* but it should be very minor and affect few if
any users.  But we should note it in release notes.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org


Mime
View raw message