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Commit db951378 authored by Xiangrui Meng's avatar Xiangrui Meng
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[SPARK-7922] [MLLIB] use DataFrames for user/item factors in ALSModel

Expose user/item factors in DataFrames. This is to be more consistent with the pipeline API. It also helps maintain consistent APIs across languages. This PR also removed fitting params from `ALSModel`.

coderxiang

Author: Xiangrui Meng <meng@databricks.com>

Closes #6468 from mengxr/SPARK-7922 and squashes the following commits:

7bfb1d5 [Xiangrui Meng] update ALSModel in PySpark
1ba5607 [Xiangrui Meng] use DataFrames for user/item factors in ALS
parent cd3d9a5c
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