Github user dbtsai commented on the pull request:
https://github.com/apache/spark/pull/1379#issuecomment-66192930
@avulanov I did couple performance turning in the MLOR gradient calculation
in my company's proprietary implementation which results 4x faster than the
open source one in github you tested. I'm trying to make it open source and
merge into spark soon. (ps, simple polynomial expansion with MLOR can increase
the mnist8m accuracy from 86% to 94% in my experiment. See Prof. CJ Lin's talk
- https://www.youtube.com/watch?v=GCIJP0cLSmU )
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