Github user dbtsai commented on the pull request:
https://github.com/apache/spark/pull/582#issuecomment-41740842
@mengxr Just did some hack on trying to implement the right "stochastic"
L-BFGS, and it kind of works as long as we don't change the objective function.
But there is no good way to know which LBFGS step it is to keep the objective
function the same in line search step, so I need to do some injection as David
suggest. See
https://github.com/dbtsai/spark/commit/0c699f259af7c1bd630d033a3ce960771efaf66c
What do you think now? Just remove the miniBatchFraction since the RDD
sample is even not efficient?
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