Xiangrui Meng created SPARK-1668:
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Summary: 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
Priority: Minor
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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