Github user srowen commented on the pull request:
https://github.com/apache/spark/pull/3536#issuecomment-83749073
I kind of like this functionality; @sbourke are you in a position to
continue with this? I think it needs a few typo fixes and commentary about its
function. This is really about computing similar users and items rather than
recommending items to users or users to items. I also think it has to include
dividing by the norms to be cosine similarity.
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