Github user Lewuathe commented on a diff in the pull request:
https://github.com/apache/spark/pull/5033#discussion_r26568664
--- Diff:
mllib/src/main/scala/org/apache/spark/mllib/optimization/LBFGS.scala ---
@@ -60,6 +60,8 @@ class LBFGS(private var gradient: Gradient, private var
updater: Updater)
/**
* Set the convergence tolerance of iterations for L-BFGS. Default 1E-4.
* Smaller value will lead to higher accuracy with the cost of more
iterations.
+ * This value must be nonnegative. Lower convergence tolerance is less
tolerant
--- End diff --
I'm sorry for my unnatural expression. I modified to be more natural. Thank
you.
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