Github user jkbradley commented on the pull request:
https://github.com/apache/spark/pull/3636#issuecomment-66178359
@Lewuathe Thanks for the PR! I added some inline comments. One more
general comment: When using subsampling (miniBatchFraction < 1.0), testing
against a convergenceTolerance can be dangerous because of the stochasticity.
It can be would be good to add a check at the beginning of optimization to see
if miniBatchFraction < 1.0 && convergenceTolerance > 0.0. If that is the case,
then we should print a warning.
Let me know when I should make another pass over the PR.
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