GitHub user yanboliang opened a pull request:
https://github.com/apache/spark/pull/8937
[SPARK-10736] [ML] Use 1 for all ratings if $(ratingCol) = ""
For some implicit dataset, ratings may not exist in the training data. In
this case, we can assume all observed pairs to be positive and treat their
ratings as 1. This should happen when users set ratingCol to an empty string.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/yanboliang/spark spark-10736
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/8937.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #8937
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commit 56436803d32bb0d2d76ff595630586d8444697dd
Author: Yanbo Liang <[email protected]>
Date: 2015-09-29T10:41:35Z
Use 1 for all ratings if is null
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