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https://issues.apache.org/jira/browse/SPARK-20423?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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DB Tsai resolved SPARK-20423.
-----------------------------
Resolution: Fixed
Fix Version/s: 2.2.0
3.0.0
Issue resolved by pull request 17706
[https://github.com/apache/spark/pull/17706]
> fix MLOR coeffs centering when reg == 0
> ---------------------------------------
>
> Key: SPARK-20423
> URL: https://issues.apache.org/jira/browse/SPARK-20423
> Project: Spark
> Issue Type: Improvement
> Components: ML
> Affects Versions: 2.0.0, 2.1.0
> Reporter: Weichen Xu
> Priority: Minor
> Fix For: 3.0.0, 2.2.0
>
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> When reg == 0, MLOR has multiple solutions and we need to centralize the
> coeffs to get identical result.
> BUT current implementation centralize the coefficientMatrix by the global
> coeffs means.
> In fact the coefficientMatrix should be centralized on each feature index
> itself.
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