Github user feynmanliang commented on a diff in the pull request:
https://github.com/apache/spark/pull/7099#discussion_r33712588
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/regression/LinearRegression.scala ---
@@ -193,11 +199,36 @@ class LinearRegression(override val uid: String)
val intercept = if ($(fitIntercept)) yMean - dot(weights,
Vectors.dense(featuresMean)) else 0.0
if (handlePersistence) instances.unpersist()
+ val summary = generateTrainingResults(instances, lossHistory.result(),
weights, intercept)
+
// TODO: Converts to sparse format based on the storage, but may base
on the scoring speed.
- copyValues(new LinearRegressionModel(uid, weights.compressed,
intercept))
+ copyValues(new LinearRegressionModel(uid, weights.compressed,
intercept, summary))
+ }
+
+ private def generateTrainingResults(
--- End diff --
OK.
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