Github user dbtsai commented on a diff in the pull request:
https://github.com/apache/spark/pull/8631#discussion_r39937365
--- Diff:
mllib/src/test/scala/org/apache/spark/ml/regression/LinearRegressionSuite.scala
---
@@ -510,4 +513,90 @@ class LinearRegressionSuite extends SparkFunSuite with
MLlibTestSparkContext {
.zip(testSummary.residuals.select("residuals").collect())
.forall { case (Row(r1: Double), Row(r2: Double)) => r1 ~== r2
relTol 1E-5 }
}
+
+ test("linear regression with weighted samples"){
+ val (data, weightedData) = {
+ val activeData = LinearDataGenerator.generateLinearInput(
+ 6.3, Array(4.7, 7.2), Array(0.9, -1.3), Array(0.7, 1.2), 500, 1,
0.1)
+
+ val rnd = new Random(8392)
+ val signedData = activeData map { case p: LabeledPoint =>
+ (rnd.nextGaussian() > 0.0, p)
+ }
+
+ val data1 = signedData flatMap {
+ case (true, p) => Iterator(p, p)
+ case (false, p) => Iterator(p)
+ }
+
+ val weightedSignedData = signedData flatMap {
--- End diff --
ditto
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