Xiangrui Meng created SPARK-4396:
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Summary: Support lookup by index in Rating
Key: SPARK-4396
URL: https://issues.apache.org/jira/browse/SPARK-4396
Project: Spark
Issue Type: New Feature
Components: MLlib, PySpark
Reporter: Xiangrui Meng
Assignee: Xiangrui Meng
In PySpark, ALS can take an RDD of (user, product, rating) tuples as input.
However, model.predict outputs an RDD of Rating. So on the input side, users
can use r[0], r[1], r[2], while on the output side, users have to use r.user,
r.product, r.rating. We should allow lookup by index in Rating.
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