Github user srowen commented on the pull request:
https://github.com/apache/spark/pull/7722#issuecomment-126410625
Hm... I suppose I would expect to optionally change the cost function to
something like absolute error, rather than introduce a different class. this is
still essentially linear regression right?
If the difference is more than the cost function, I could see making a
parallel implementation, but that seems like a lot of duplication to avoid if
possible.
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