Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/1104#discussion_r13905461
--- Diff:
mllib/src/test/scala/org/apache/spark/mllib/optimization/LBFGSSuite.scala ---
@@ -195,4 +195,39 @@ class LBFGSSuite extends FunSuite with
LocalSparkContext with Matchers {
assert(lossLBFGS3.length == 6)
assert((lossLBFGS3(4) - lossLBFGS3(5)) / lossLBFGS3(4) <
convergenceTol)
}
+
+ test("Optimize via class LBFGS.") {
+ val regParam = 0.2
+
+ // Prepare another non-zero weights to compare the loss in the first
iteration.
+ val initialWeightsWithIntercept = Vectors.dense(0.3, 0.12)
+ val convergenceTol = 1e-12
+ val maxNumIterations = 10
+
+ val lbfgsOptimizer = new LBFGS(gradient, squaredL2Updater)
+ .setNumCorrections(numCorrections)
--- End diff --
two space indentation
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