Github user NarineK commented on the pull request:
https://github.com/apache/spark/pull/9667#issuecomment-156410369
Hi there,
If we want to have many output variables, we'll need to add wrapper class
e.g. OptimizeResult which will embrace all those output variables.
Since LBFGS is using breeze's implementation, we are partially limited to
what breeze will offer to us. E.g. we can still add gradient, hessian or it's
inverse to the output.
Let me know what do you think about it.
Thanks,
Narine
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