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https://issues.apache.org/jira/browse/SPARK-6642?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14391412#comment-14391412
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Apache Spark commented on SPARK-6642:
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User 'mengxr' has created a pull request for this issue:
https://github.com/apache/spark/pull/5314
> Change the lambda weight to number of explicit ratings in implicit ALS
> ----------------------------------------------------------------------
>
> Key: SPARK-6642
> URL: https://issues.apache.org/jira/browse/SPARK-6642
> Project: Spark
> Issue Type: Bug
> Components: MLlib
> Affects Versions: 1.3.0
> Reporter: Xiangrui Meng
> Assignee: Xiangrui Meng
>
> Until SPARK-6637 is resolved, we should switch back to the 1.2 lambda
> weighting strategy to be consistent.
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