[
https://issues.apache.org/jira/browse/SPARK-24024?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
DB Tsai resolved SPARK-24024.
-----------------------------
Resolution: Fixed
Fix Version/s: 2.4.0
> Fix deviance calculations in GLM to handle corner cases
> -------------------------------------------------------
>
> Key: SPARK-24024
> URL: https://issues.apache.org/jira/browse/SPARK-24024
> Project: Spark
> Issue Type: Improvement
> Components: ML
> Affects Versions: 2.3.0
> Reporter: Teng Peng
> Assignee: Teng Peng
> Priority: Minor
> Fix For: 2.4.0
>
>
> It is reported by Spark users that the deviance calculations does not handle
> a corner case. Thus, the correct model summary cannot be obtained. The user
> has confirmed the the issue is in
> override def deviance(y: Double, mu: Double, weight: Double): Double = {
> 2.0 * weight * (y * math.log(y / mu) - (y - mu))
> }
> when y = 0.
>
> The user also mentioned there are many other places he believe we should
> check the same thing.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org
