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https://issues.apache.org/jira/browse/SPARK-1668?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiangrui Meng resolved SPARK-1668.
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Resolution: Implemented
Fix Version/s: 1.0.0
> Add implicit preference as an option to examples/MovieLensALS
> -------------------------------------------------------------
>
> Key: SPARK-1668
> URL: https://issues.apache.org/jira/browse/SPARK-1668
> Project: Spark
> Issue Type: New Feature
> Components: MLlib
> Reporter: Xiangrui Meng
> Assignee: Sandeep Singh
> Priority: Minor
> Fix For: 1.0.0
>
>
> Add --implicitPrefs as an command-line option to the example app MovieLensALS
> under examples/. For evaluation, we should map ratings to range [0, 1] and
> compare it with predictions. It would be better if we add unobserved ratings
> (assuming negatives) to evaluation.
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